[Solved] Howto boot Windows 7 from grub2 and uefi?

I have added the following entry in my grub.cfg file..:
menuentry "Windows 7" {
insmod part_gpt
insmod fat
search --file --no-floppy --set=root /efi/Microsoft/Boot/bootmgfw.efi
chainloader ()/efi/Microsoft/Boot/bootmgfw.efi
But if I choose this entry, I get an error telling me "No such disk"
What am I missing?
Regards,
BTJ
Last edited by bjorntj (2011-09-13 08:41:42)

bjorntj wrote:
Thx...
BTJ
Mark the thread as [SOLVED].
Last edited by skodabenz (2011-09-13 08:39:14)

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[SOLVED] Dual Boot Window 7 & Arch on a Uefi system.

From the Wiki
Windows 7 x86_64 versions support booting in x86_64 UEFI mode from GPT disk only, OR in BIOS mode from MBR/msdos disk only. They do not support IA32 (x86 32-bit) UEFI boot from GPT/MBR disk, x86_64 UEFI boot from MBR/msdos disk, or BIOS boot from GPT disk.
I don't understand this. As stated in the title I have a ueif system so that means I have to create a GPT disk ? I already have a gpt disk which I confirmed by running Arch Live USB. Under type it said GPT. I don't understand this at all
However if Arch is installed in BIOS-GPT in one disk and Windows is installed in BIOS-MBR mode in another disk, then the BIOS bootloader used by Arch CAN boot the Windows in the other disk, if the bootloader itself has the ability to chainload from another disk.
Note: If Arch and Windows are dual-booting from same disk, then Arch SHOULD follow the same firmware boot mode and partitioning combination used by the installed Windows in the disk.
In the Note above it says both Arch and Windows follow the same boot mode if they are dual booting from same disk. I DO NOT want to do this. I have already decided to partition my drive with 200 Gb going to Windows and 500 Gb going to Arch. Does this mean that I should install both in different modes i.e. Arch in Bios-GPT and Windows in Bios-MBR.
The recommended way to setup a Linux/Windows dual booting system is to first install Windows, only using part of the disk for its partitions. When you have finished the Windows setup, boot into the Linux install environment where you can create additional partitions for Linux while leaving the existing Windows partitions untouched.
UEFI systems
Both Gummiboot and rEFInd autodetect Windows Boot Manager \EFI\Microsoft\Boot\bootmgfw.efi and show it in their boot menu, so there is no manual config required.
For GRUB(2) follow GRUB#Windows_Installed_in_UEFI-GPT_Mode_menu_entry.
Syslinux (as of version 6.02 and 6.03-pre9) and ELILO do not support chainloading other EFI applications, so they cannot be used to chainload \EFI\Microsoft\Boot\bootmgfw.efi .
Computers that come with newer versions of Windows often have secure boot enabled. You will need to take extra steps to either disable secure boot or to make your installation media compatible with secure boot.
Being a beginner should I go with Gummiboot then. GRUB made a mess last time.
Also my secure boot is NOT enabled so is that good.
I have read the FAQs, Beginner's guide, Installation Guide, Dual Boot wiki entry but I just don't understand the above concepts. But it looks this this is the main thing in dual booting. Almost everything else is doable but this I have to get right on account of what happened the last time I installed Arch without getting the above right.
Last edited by Some Arch Lovin (2014-06-14 08:53:14)

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Hi Ralph,
thanks a lot for the helpful information! But the problem still persists, and I don't know what's wrong about the installation. I again checked the case and device are fully compatible with Windows 8 on USB 3 and the current boot camp drivers are installed - so everything should work perfectly fine as Windows 8 does natively support booting from external USB-3-devices.
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[SOLVED] Unable to Boot Windows 7 from GRUB

I recently reinstalled Arch onto my laptop (Lenovo Thinkpad t520) and have been having problems with Grub. For the last week I've been having trouble getting it to run grub at boot at all, only being able to run windows 7 by flagging it as the bootable drive. The other day I finally got it to boot into grub, and from grub I can boot into Arch. However, I can not boot into windows 7 through grub. When I attempt to, it throws an error:
Invalid EFI file path
I'm somewhat new to arch, and especially new to efi bootloading and such. Right now the only way I can get into windows is either booting from the arch install disk > boot other os and specifying partition 2 (where I have windows installed) or by pressing f12 at boot. When I do this (not sure what the term is, if anyone knows please tell me), it brings up a menu asking where I want to boot with "arch_efi" "cd drive" "Hard drive" etc. I choose hard drive and it will then boot to windows by default. Booting normally takes me to grub where I can boot into arch but not windows. If there's any more info you need please let me know and I'll try to provide it. Thanks in advance.
Also, here is my current partition setup
/dev/sda1 /boot/efi
/dev/sda2 Windows7
/dev/sda3 Extended partition containing sda 5,6, & 7
/dev/sda4 swap
/dev/sda5 /boot
/dev/sda6 /
/dev/sda7 /home
UPDATE
Terminator seems to be right (still on a roll!), so I wiped the partition I had grub on, removed grub, and installed syslinux. Now I have another problem that I'm hoping can be solved in the same thread to avoid another. It boots to syslinux no problem, and I can boot to windows from there all good, but when I select arch I get:
Root device mounted successfully but /sbin/init does not exist
I haven't been able to look for solutions too much on my own, but any help would be appreciated, thank you.
Last edited by IamFuzzles (2012-08-22 04:20:56)

Terminator wrote:If I understand it correctly, what you are trying is impossible: you are trying to boot windows using UEFI on a disk with MBR partitioning. Windows 7 only supports UEFI on discs with GPT partitioning but AFAIK, extended partitions only exist in MBR partitioning.
i also saw this in the arch wiki, but i have a brand new lenovo ideapad y570 running windows 7 64-bit that i'm in the process of setting up for someone, and it has what i think is an efi system partition but the disk uses mbr partitioning. does anyone know why this might be, or is there a way i can verify that the system is actually being booted via bios-mbr?
Last edited by e_tank (2012-08-21 11:56:15)

[SOLVED] Can't boot Windows 8 using grub2. invalid EFI file path

English is not my native language. Please excuse typing errors.
I have just successfully installed Arch linux with grub2 as its boot manager. I
followed the arch beginner guide. I've used grub before and I'm familiar with
it, so chose to use grub instead for efistub. I installed os-prober and
ran grub-mkconfig to create the grub.cfg file. The problem now is that I recieve
an error when I try to boot windows 8. I have two drives (/dev/sda and /dev/sdb)
and I believe both are EFI-systems.
However, it's not very important for me to use grub, so if booting into windows
8 is easier using efistub, I will try that.
The computer is ASUS ux32vd with a hybrid disk with 25GB on the SSD and 500GB on
the hard drive. I believe the SSD part is used by Windows.
This is the first error I recieved when I tried to boot windows.
error: can't find command `drivemap'.
error: invalid EFI file path.
Press any key to continue...
Then I tried to follow this post
https://bbs.archlinux.org/viewtopic.php?id=150183 and made a new boot
entry "Windows 82". And I got a new error:
error: unspecified search type.
error: file '/EFI/Microsoft/Boot/bootmgfw.efi' not found
Press any key to continue...
Here are some command line outputs.
~ ᐅ sudo blkid
/dev/sdb1: PARTLABEL="HFS" PARTUUID="4613ee39-4727-4347-8134-173f590f716f"
/dev/sdb2: LABEL="INTELRST" UUID="BA5E-7431" TYPE="vfat" PARTLABEL="EFI system partition" PARTUUID="304f2630-89b2-4632-a566-e8c6db9df3a9"
/dev/sda1: LABEL="SYSTEM" UUID="90FA-5332" TYPE="vfat" PARTLABEL="EFI system partition" PARTUUID="5a60fff2-384a-4168-ad7b-7ba25c03c910"
/dev/sda2: LABEL="Recovery" UUID="ECE43E9AE43E674C" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="5da02b32-607a-4c63-88ef-00499bd6e05c"
/dev/sda3: PARTLABEL="Microsoft reserved partition" PARTUUID="6c501a91-71a5-45d8-a9ee-2e2a1c427258"
/dev/sda4: LABEL="OS" UUID="DE4241E84241C5CD" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="6e182189-b0e3-479a-ac74-8e69452d7c66"
/dev/sda5: LABEL="DATA" UUID="B05448EC5448B6BE" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="be7e04ac-fb01-44fd-9571-e0b001652322"
/dev/sda6: LABEL="Restore" UUID="B8D84520D844DDEE" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="4d42c26d-2c85-4ebf-88ec-7a83a4814a61"
/dev/sda7: LABEL="ROOT" UUID="0d63036d-b624-4596-a296-1db457c068d5" TYPE="ext4" PARTUUID="707f4bca-18b4-4340-838f-ec3a39e9338a"
/dev/sda8: UUID="bcaa2c5f-150d-47c9-9a58-9a7b7ec7bed2" TYPE="swap" PARTUUID="1da43668-418c-4883-810b-e1c3dee75e61"
~ ᐅ sudo lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 465.8G 0 disk
├─sda1 8:1 0 300M 0 part /boot/efi
├─sda2 8:2 0 600M 0 part
├─sda3 8:3 0 128M 0 part
├─sda4 8:4 0 186.3G 0 part /mnt/windows
├─sda5 8:5 0 190.1G 0 part /mnt/data
├─sda6 8:6 0 20G 0 part
├─sda7 8:7 0 66.5G 0 part /
└─sda8 8:8 0 1.9G 0 part
sdb 8:16 0 22.4G 0 disk
├─sdb1 8:17 0 18.4G 0 part
└─sdb2 8:18 0 4G 0 part
~ ᐅ sudo cat /boot/grub/grub.cfg
# DO NOT EDIT THIS FILE
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
### BEGIN /etc/grub.d/00_header ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="0"
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_gpt
insmod ext2
set root='hd0,gpt7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt7 --hint-efi=hd0,gpt7 --hint-baremetal=ahci0,gpt7 0d63036d-b624-4596-a296-1db457c068d5
else
search --no-floppy --fs-uuid --set=root 0d63036d-b624-4596-a296-1db457c068d5
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_US
insmod gettext
fi
terminal_input console
terminal_output gfxterm
set timeout=5
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Arch Linux, with Linux core repo kernel' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-core repo kernel-true-0d63036d-b624-4596-a296-1db457c068d5' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt7 --hint-efi=hd0,gpt7 --hint-baremetal=ahci0,gpt7 0d63036d-b624-4596-a296-1db457c068d5
else
search --no-floppy --fs-uuid --set=root 0d63036d-b624-4596-a296-1db457c068d5
fi
echo 'Loading Linux core repo kernel ...'
linux /boot/vmlinuz-linux root=UUID=0d63036d-b624-4596-a296-1db457c068d5 ro quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initramfs-linux.img
menuentry 'Arch Linux, with Linux core repo kernel (Fallback initramfs)' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-core repo kernel-fallback-0d63036d-b624-4596-a296-1db457c068d5' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt7 --hint-efi=hd0,gpt7 --hint-baremetal=ahci0,gpt7 0d63036d-b624-4596-a296-1db457c068d5
else
search --no-floppy --fs-uuid --set=root 0d63036d-b624-4596-a296-1db457c068d5
fi
echo 'Loading Linux core repo kernel ...'
linux /boot/vmlinuz-linux root=UUID=0d63036d-b624-4596-a296-1db457c068d5 ro quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initramfs-linux-fallback.img
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows Recovery Environment (loader) (on /dev/sda2)' --class windows --class os $menuentry_id_option 'osprober-chain-ECE43E9AE43E674C' {
insmod part_gpt
insmod ntfs
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 ECE43E9AE43E674C
else
search --no-floppy --fs-uuid --set=root ECE43E9AE43E674C
fi
drivemap -s (hd0) ${root}
chainloader +1
menuentry 'Windows 8 (loader) (on /dev/sda4)' --class windows --class os $menuentry_id_option 'osprober-chain-DE4241E84241C5CD' {
insmod part_gpt
insmod ntfs
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 DE4241E84241C5CD
else
search --no-floppy --fs-uuid --set=root DE4241E84241C5CD
fi
drivemap -s (hd0) ${root}
chainloader +1
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
#menuentry "Microsoft Windows 8 x86_64 UEFI-GPT NTFS" {
#insmod part_gpt
#insmod ntfs
#insmod search_fs_uuid
#insmod chain
#search --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 DE4241E84241C5CD
#chainloader /EFI/Microsoft/Boot/bootmgfw.efi
menuentry "Windows 8" {
insmod part_gpt
insmod fat
insmod search_fs_uuid
insmod chain
search --no-floppy --fs--uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1 90FA-5332
chainloader /EFI/Microsoft/Boot/bootmgfw.efi
menuentry "Windows 8-2" --class windows --class os $menuentry_id_option 'osprober-chain-ECE43E9AE43E674C' {
insmod part_gpt
insmod fat
insmod search_fs_uuid
insmod chain
search --no-floppy --fs--uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1 90FA-5332
chainloader /EFI/Microsoft/Boot/bootmgfw.efi
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
~ ᐅ sudo grub-probe --target=fs_uuid /boot/efi/EFI/Microsoft/Boot/bootmgfw.efi
90FA-5332
~ ᐅ sudo grub-probe --target=hints_string /boot/efi/EFI/Microsoft/Boot/bootmgfw.efi
--hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1
bootinitscript
Boot Info Script 0.61 [1 April 2012]
============================= Boot Info Summary: ===============================
=> No boot loader is installed in the MBR of /dev/sda.
=> No boot loader is installed in the MBR of /dev/sdb.
sda1: __________________________________________________________________________
File system: vfat
Boot sector type: Unknown
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /efi/arch-grub/grubx64.efi /efi/Boot/bkpbootx64.efi
/efi/Boot/bootx64.efi /efi/ubuntu/grubx64.efi
sda2: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows Vista/7: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /bootmgr /Boot/BCD
sda3: __________________________________________________________________________
File system:
Boot sector type: -
Boot sector info:
Mounting failed: mount: unknown filesystem type ''
sda4: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows Vista/7: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /bootmgr /Boot/BCD /Windows/System32/winload.exe
sda5: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows Vista/7: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files:
sda6: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows Vista/7: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files:
sda7: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Arch Linux ()
Boot files: /boot/grub/grub.cfg /etc/fstab
sda8: __________________________________________________________________________
File system: swap
Boot sector type: -
Boot sector info:
sdb1: __________________________________________________________________________
File system:
Boot sector type: -
Boot sector info:
Mounting failed: mount: unknown filesystem type ''
mount: unknown filesystem type ''
sdb2: __________________________________________________________________________
File system: vfat
Boot sector type: Unknown
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files:
============================ Drive/Partition Info: =============================
Drive: sda _____________________________________________________________________
Disk /dev/sda: 500.1 GB, 500107862016 bytes, 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sda1 1 976,773,167 976,773,167 ee GPT
GUID Partition Table detected.
Partition Start Sector End Sector # of Sectors System
/dev/sda1 2,048 616,447 614,400 EFI System partition
/dev/sda2 616,448 1,845,247 1,228,800 Windows Recovery Environment (Windows)
/dev/sda3 1,845,248 2,107,391 262,144 Microsoft Reserved Partition (Windows)
/dev/sda4 2,107,392 392,816,639 390,709,248 Data partition (Windows/Linux)
/dev/sda5 392,816,640 791,449,599 398,632,960 Data partition (Windows/Linux)
/dev/sda6 934,809,600 976,773,119 41,963,520 Windows Recovery Environment (Windows)
/dev/sda7 791,449,600 930,902,015 139,452,416 Data partition (Windows/Linux)
/dev/sda8 930,902,016 934,809,599 3,907,584 Swap partition (Linux)
Drive: sdb _____________________________________________________________________
Disk /dev/sdb: 24.0 GB, 24015495168 bytes, 46905264 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sdb1 1 4,294,967,295 4,294,967,295 ee GPT
/dev/sdb1 ends after the last sector of /dev/sdb
GUID Partition Table detected.
Partition Start Sector End Sector # of Sectors System
/dev/sdb1 8,392,704 46,903,295 38,510,592 -
/dev/sdb2 2,048 8,390,655 8,388,608 -
"blkid" output: ________________________________________________________________
Device UUID TYPE LABEL
/dev/sda1 90FA-5332 vfat SYSTEM
/dev/sda2 ECE43E9AE43E674C ntfs Recovery
/dev/sda3
/dev/sda4 DE4241E84241C5CD ntfs OS
/dev/sda5 B05448EC5448B6BE ntfs DATA
/dev/sda6 B8D84520D844DDEE ntfs Restore
/dev/sda7 0d63036d-b624-4596-a296-1db457c068d5 ext4 ROOT
/dev/sda8 bcaa2c5f-150d-47c9-9a58-9a7b7ec7bed2 swap
/dev/sdb1
/dev/sdb2 BA5E-7431 vfat INTELRST
================================ Mount points: =================================
Device Mount_Point Type Options
/dev/sda1 /boot/efi vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/sda4 /mnt/windows fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096)
/dev/sda5 /mnt/data fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096)
/dev/sda7 / ext4 (rw,relatime,commit=600,data=ordered)
=========================== sda7/boot/grub/grub.cfg: ===========================
# DO NOT EDIT THIS FILE
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
### BEGIN /etc/grub.d/00_header ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="0"
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_gpt
insmod ext2
set root='hd0,gpt7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt7 --hint-efi=hd0,gpt7 --hint-baremetal=ahci0,gpt7 0d63036d-b624-4596-a296-1db457c068d5
else
search --no-floppy --fs-uuid --set=root 0d63036d-b624-4596-a296-1db457c068d5
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_US
insmod gettext
fi
terminal_input console
terminal_output gfxterm
set timeout=5
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Arch Linux, with Linux core repo kernel' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-core repo kernel-true-0d63036d-b624-4596-a296-1db457c068d5' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt7 --hint-efi=hd0,gpt7 --hint-baremetal=ahci0,gpt7 0d63036d-b624-4596-a296-1db457c068d5
else
search --no-floppy --fs-uuid --set=root 0d63036d-b624-4596-a296-1db457c068d5
fi
echo 'Loading Linux core repo kernel ...'
linux /boot/vmlinuz-linux root=UUID=0d63036d-b624-4596-a296-1db457c068d5 ro quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initramfs-linux.img
menuentry 'Arch Linux, with Linux core repo kernel (Fallback initramfs)' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-core repo kernel-fallback-0d63036d-b624-4596-a296-1db457c068d5' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt7 --hint-efi=hd0,gpt7 --hint-baremetal=ahci0,gpt7 0d63036d-b624-4596-a296-1db457c068d5
else
search --no-floppy --fs-uuid --set=root 0d63036d-b624-4596-a296-1db457c068d5
fi
echo 'Loading Linux core repo kernel ...'
linux /boot/vmlinuz-linux root=UUID=0d63036d-b624-4596-a296-1db457c068d5 ro quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initramfs-linux-fallback.img
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows Recovery Environment (loader) (on /dev/sda2)' --class windows --class os $menuentry_id_option 'osprober-chain-ECE43E9AE43E674C' {
insmod part_gpt
insmod ntfs
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 ECE43E9AE43E674C
else
search --no-floppy --fs-uuid --set=root ECE43E9AE43E674C
fi
drivemap -s (hd0) ${root}
chainloader +1
menuentry 'Windows 8 (loader) (on /dev/sda4)' --class windows --class os $menuentry_id_option 'osprober-chain-DE4241E84241C5CD' {
insmod part_gpt
insmod ntfs
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 DE4241E84241C5CD
else
search --no-floppy --fs-uuid --set=root DE4241E84241C5CD
fi
drivemap -s (hd0) ${root}
chainloader +1
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
menuentry "Windows 8" {
insmod part_gpt
insmod fat
insmod search_fs_uuid
insmod chain
search --no-floppy --fs--uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1 90FA-5332
chainloader /EFI/Microsoft/Boot/bootmgfw.efi
menuentry 'Windows 82' --class windows --class os $menuentry_id_option 'osprober-chain-ECE43E9AE43E674C' {
insmod part_gpt
insmod fat
insmod search_fs_uuid
insmod chain
search --no-floppy --fs--uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1 90FA-5332
chainloader /EFI/Microsoft/Boot/bootmgfw.efi
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
=============================== sda7/etc/fstab: ================================
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
# /dev/sda7 LABEL=ROOT
UUID=0d63036d-b624-4596-a296-1db457c068d5 / ext4 rw,relatime,data=ordered 0 1
# /dev/sda1 LABEL=SYSTEM
UUID=90FA-5332 /boot/efi vfat rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro 0 2
LABEL=DATA /mnt/data ntfs-3g uid=sighol,gid=users,dmask=022,fmask=133 0 0
LABEL=OS /mnt/windows ntfs-3g uid=sighol,gid=users,dmask=022,fmask=133 0 0
=================== sda7: Location of files loaded by Grub: ====================
GiB - GB File Fragment(s)
======================== Unknown MBRs/Boot Sectors/etc: ========================
Unknown GPT Partiton Type
5850cbb887c11947baf0379ca2d4c97e
Unknown GPT Partiton Type
dee2bfd3af3ddf11ba40e3a556d89593
Unknown BootLoader on sda1
00000000 eb 58 90 4d 53 44 4f 53 35 2e 30 00 02 08 5e 1b |.X.MSDOS5.0...^.|
00000010 02 00 00 00 00 f8 00 00 3f 00 ff 00 00 08 00 00 |........?.......|
00000020 00 60 09 00 51 02 00 00 00 00 00 00 02 00 00 00 |.`..Q...........|
00000030 01 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000040 80 01 29 32 53 fa 90 4e 4f 20 4e 41 4d 45 20 20 |..)2S..NO NAME |
00000050 20 20 46 41 54 33 32 20 20 20 33 c9 8e d1 bc f4 | FAT32 3.....|
00000060 7b 8e c1 8e d9 bd 00 7c 88 56 40 88 4e 02 8a 56 |{......|[email protected]|
00000070 40 b4 41 bb aa 55 cd 13 72 10 81 fb 55 aa 75 0a |@.A..U..r...U.u.|
00000080 f6 c1 01 74 05 fe 46 02 eb 2d 8a 56 40 b4 08 cd |...t..F..-.V@...|
00000090 13 73 05 b9 ff ff 8a f1 66 0f b6 c6 40 66 0f b6 |.s......f...@f..|
000000a0 d1 80 e2 3f f7 e2 86 cd c0 ed 06 41 66 0f b7 c9 |...?.......Af...|
000000b0 66 f7 e1 66 89 46 f8 83 7e 16 00 75 39 83 7e 2a |f..f.F..~..u9.~*|
000000c0 00 77 33 66 8b 46 1c 66 83 c0 0c bb 00 80 b9 01 |.w3f.F.f........|
000000d0 00 e8 2c 00 e9 a8 03 a1 f8 7d 80 c4 7c 8b f0 ac |..,......}..|...|
000000e0 84 c0 74 17 3c ff 74 09 b4 0e bb 07 00 cd 10 eb |..t.<.t.........|
000000f0 ee a1 fa 7d eb e4 a1 7d 80 eb df 98 cd 16 cd 19 |...}...}........|
00000100 66 60 80 7e 02 00 0f 84 20 00 66 6a 00 66 50 06 |f`.~.... .fj.fP.|
00000110 53 66 68 10 00 01 00 b4 42 8a 56 40 8b f4 cd 13 |Sfh.....B.V@....|
00000120 66 58 66 58 66 58 66 58 eb 33 66 3b 46 f8 72 03 |fXfXfXfX.3f;F.r.|
00000130 f9 eb 2a 66 33 d2 66 0f b7 4e 18 66 f7 f1 fe c2 |..*f3.f..N.f....|
00000140 8a ca 66 8b d0 66 c1 ea 10 f7 76 1a 86 d6 8a 56 |..f..f....v....V|
00000150 40 8a e8 c0 e4 06 0a cc b8 01 02 cd 13 66 61 0f |@............fa.|
00000160 82 74 ff 81 c3 00 02 66 40 49 75 94 c3 42 4f 4f |[email protected]|
00000170 54 4d 47 52 20 20 20 20 00 00 00 00 00 00 00 00 |TMGR ........|
00000180 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001a0 00 00 00 00 00 00 00 00 00 00 00 00 0d 0a 44 69 |..............Di|
000001b0 73 6b 20 65 72 72 6f 72 ff 0d 0a 50 72 65 73 73 |sk error...Press|
000001c0 20 61 6e 79 20 6b 65 79 20 74 6f 20 72 65 73 74 | any key to rest|
000001d0 61 72 74 0d 0a 00 00 00 00 00 00 00 00 00 00 00 |art.............|
000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001f0 00 00 00 00 00 00 00 00 ac 01 b9 01 00 00 55 aa |..............U.|
00000200
Unknown BootLoader on sdb2
00000000 eb 58 90 4d 53 44 4f 53 35 2e 30 00 02 08 2e 20 |.X.MSDOS5.0.... |
00000010 02 00 00 00 00 f8 00 00 3f 00 ff 00 00 08 00 00 |........?.......|
00000020 00 00 80 00 e9 1f 00 00 00 00 00 00 02 00 00 00 |................|
00000030 01 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000040 80 00 29 31 74 5e ba 4e 4f 20 4e 41 4d 45 20 20 |..)1t^.NO NAME |
00000050 20 20 46 41 54 33 32 20 20 20 33 c9 8e d1 bc f4 | FAT32 3.....|
00000060 7b 8e c1 8e d9 bd 00 7c 88 56 40 88 4e 02 8a 56 |{......|[email protected]|
00000070 40 b4 41 bb aa 55 cd 13 72 10 81 fb 55 aa 75 0a |@.A..U..r...U.u.|
00000080 f6 c1 01 74 05 fe 46 02 eb 2d 8a 56 40 b4 08 cd |...t..F..-.V@...|
00000090 13 73 05 b9 ff ff 8a f1 66 0f b6 c6 40 66 0f b6 |.s......f...@f..|
000000a0 d1 80 e2 3f f7 e2 86 cd c0 ed 06 41 66 0f b7 c9 |...?.......Af...|
000000b0 66 f7 e1 66 89 46 f8 83 7e 16 00 75 39 83 7e 2a |f..f.F..~..u9.~*|
000000c0 00 77 33 66 8b 46 1c 66 83 c0 0c bb 00 80 b9 01 |.w3f.F.f........|
000000d0 00 e8 2c 00 e9 a8 03 a1 f8 7d 80 c4 7c 8b f0 ac |..,......}..|...|
000000e0 84 c0 74 17 3c ff 74 09 b4 0e bb 07 00 cd 10 eb |..t.<.t.........|
000000f0 ee a1 fa 7d eb e4 a1 7d 80 eb df 98 cd 16 cd 19 |...}...}........|
00000100 66 60 80 7e 02 00 0f 84 20 00 66 6a 00 66 50 06 |f`.~.... .fj.fP.|
00000110 53 66 68 10 00 01 00 b4 42 8a 56 40 8b f4 cd 13 |Sfh.....B.V@....|
00000120 66 58 66 58 66 58 66 58 eb 33 66 3b 46 f8 72 03 |fXfXfXfX.3f;F.r.|
00000130 f9 eb 2a 66 33 d2 66 0f b7 4e 18 66 f7 f1 fe c2 |..*f3.f..N.f....|
00000140 8a ca 66 8b d0 66 c1 ea 10 f7 76 1a 86 d6 8a 56 |..f..f....v....V|
00000150 40 8a e8 c0 e4 06 0a cc b8 01 02 cd 13 66 61 0f |@............fa.|
00000160 82 74 ff 81 c3 00 02 66 40 49 75 94 c3 42 4f 4f |[email protected]|
00000170 54 4d 47 52 20 20 20 20 00 00 00 00 00 00 00 00 |TMGR ........|
00000180 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001a0 00 00 00 00 00 00 00 00 00 00 00 00 0d 0a 44 69 |..............Di|
000001b0 73 6b 20 65 72 72 6f 72 ff 0d 0a 50 72 65 73 73 |sk error...Press|
000001c0 20 61 6e 79 20 6b 65 79 20 74 6f 20 72 65 73 74 | any key to rest|
000001d0 61 72 74 0d 0a 00 00 00 00 00 00 00 00 00 00 00 |art.............|
000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001f0 00 00 00 00 00 00 00 00 ac 01 b9 01 00 00 55 aa |..............U.|
00000200
========= Devices which don't seem to have a corresponding hard drive: =========
sdc {
=============================== StdErr Messages: ===============================
cat: /tmp/BootInfo-wSbit3X4/Tmp_Log: No such file or directory
/dev/sdc: open failed: No medium found
No volume groups found
mdadm: No arrays found in config file or automatically
EDIT:
I gave up trying to make grub work, so I uninstalled grub and deleted all the grub files I could find.
# pacrem grub-efi-x86_64
# rm -fr /boot/grub
That last one I came to regret later on. So I installed rEFInd using the archlinux beginners guide. When I then tried to boot into windows It told me that /boot/grub/x86_64-efi/normal.mod was not found. I then reinstalled grub-efi-x86_64 and copied /usr/lib/grub/x86_64 to /boot/grub. Now everything works fine.
Last edited by sighol (2013-06-08 21:47:49)

sighol wrote:However, it's not very important for me to use grub, so if booting into windows
8 is easier using efistub, I will try that.
The EFI stub loader is a Linux-only boot loader; however, it is possible to use the EFI stub loader in conjunction with a separate boot manager, such as rEFInd or gummiboot. In such a configuration, you'd use the boot manager to select the OS to boot (Windows or Linux, and possibly the specific Linux kernel), and the boot loader (the Windows loader or the EFI stub loader built into a specific kernel) will then take over booting the OS. In Arch, this is often easier to configure than is GRUB, since GRUB is very complex and its automated tools to help with setting things up often get it wrong.
This is the first error I recieved when I tried to boot windows.
error: can't find command `drivemap'.
error: invalid EFI file path.
Press any key to continue...
The "drivemap" command in GRUB is generally used when booting a BIOS-mode boot loader, and in fact your "Windows Recovery Environment (loader) (on /dev/sda2)" and "Windows 8 (loader) (on /dev/sda4)" GRUB entries are both built as for BIOS-mode Windows installations -- but the fact that your disks both use GPT means that Windows won't boot in BIOS mode on your computer. (This is one of the many things that the GRUB setup scripts can get wrong.)
Then I tried to follow this post
https://bbs.archlinux.org/viewtopic.php?id=150183 and made a new boot
entry "Windows 82". And I got a new error:
error: unspecified search type.
error: file '/EFI/Microsoft/Boot/bootmgfw.efi' not found
Press any key to continue...
Both your "Windows 8" and "Windows 82" entries refer to an EFI boot loader file called EFI/Microsoft/Boot/bootmgfw.efi on your EFI System Partition (ESP). This should be correct, but your Boot Info Script output doesn't show any evidence of such a file. Sometimes Boot Info Script misses such things, so you may want to check it just to be sure. Your ESP is /dev/sda1, and it looks like it's being mounted at /boot/efi by default, so check for the /boot/efi/EFI/Microsoft directory tree, and for /boot/efi/EFI/Microsoft/Boot/bootmgfw.efi in particular. If that file isn't present, then something is wrong -- perhaps you mistakenly erased the ESP when you installed Linux, thus wiping out the Windows boot loader; or perhaps the file was accidentally deleted somewhere along the way. (Note that on FAT, which the ESP uses, case is irrelevant, and in fact case varies between the filenames reported by Boot Info Script and what's recorded in your configuration files.)
You do have another boot loader file that may be a duplicate of the Windows boot loader: EFI/BOOT/bkpbootx64.efi. This filename is generally created by Ubuntu's "Boot Repair" tool, which IMHO can do as much harm as good, especially on a system that's not booting Ubuntu. If you ran this tool, though, it's conceivable that bkpbootx64.efi is a copy of the Windows boot loader, so copying it to EFI/Microsoft/Boot/bootmgfw.efi might get things working. OTOH, the Windows boot loader relies on other files to do its job, so if they're not present, copying the Windows boot loader to its original location won't be sufficient.
If you can't get things working based on the preceding suggestions, I recommend you run a Windows repair tool. These are accessible from a Windows recovery disc. Such disc images are readily available on the Internet, but I don't happen to have any links handy. Try Microsoft's own site; images obtained from random third-party sites might contain malware. Once you've done this, chances are the computer will boot directly into Windows. You'll then need to either restore GRUB as the default boot loader or install another boot loader or boot manager. You can use the Windows "bcdedit" command to do the former, as in:
bcdedit /set {bootmgr} path \EFI\arch-grub\grubx64.efi
You'll need to type this from an Administrator Command Prompt window.

[SOLVED] Dual boot windows 7 and arch Linux with seperate hard drives

Ok so I'm stuck trying to get my computer to dual boot windows 7 and arch. They are installed on different hard drives and I have grub 2 as the boot loader. I can't find any tutorials on how to do it with seperate hard drives I know how to do it if they are on the same hard drive. Also I want windows on the "first" hard drive how do I check to see which one it considers the first?
Last edited by bdawg (2012-09-21 23:15:37)

DSpider wrote:
drobole wrote:If you want to change it so that sda becomes sdb and sdb becomes sda, you should be able to do that in BIOS.
Not from the BIOS. He would need to physically open up the computer and switch the cables between them (or add another drive).
There's no actual performance increase in changing this order. Performance increase is when you have the partitions as close to the beginning of a HDD as possible, where the platters spin faster (basic mechanics, not to be confused with CD/DVD, which are being written from the inside-out to prevent errors after extended usage), and it especially doesn't apply to SSDs whatsoever.
You may be right about that. I remember I had to do this a while back but I probably switched the cables. It also messed up the drive mapping in Windows 98 if I remember correctly.

[SOLVE] Dual Boot Windows and ArchLinux with Syslinux

Ok, i installed ArchLinux on my laptop with Windows XP (syslinux) and I cannot find get Windows to boot or mount it. I have tried to do what i can to do this but cannot. I Installed XP first like a should and something i think might be needed to know is after i created the partitions scheme (10Gb (boot partition), 50GB (XP), 80GB(was unallocated)). The installation disk formated both 2 partitions in NTFS but i installed XP on the second and Windows reported them as C and D drives. Windows being D. Thought that was bit werid thinking Windows installed the mbr on that partition. When I installed ArchLinux, it did have the boot flag set on 10GB (or C drive).
Since I installed ArchLinux, I have been unable to find a solution to mounting/booting to Windows. Installed NTFS-3G and that didn't work when i tried mount /dev/sda3 windows and i did created a folder named windows but got ...
mount: wrong fs type, bad option, bad superblock on /dev/sda3,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
Tried dmesg | tail and got
[ 76.524133] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled
[ 179.468499] ACPI: \_SB_.PCI0.LPC0.ACAD: ACPI_NOTIFY_DEVICE_CHECK event: unsupported
[ 705.472330] 8139too 0000:02:03.0 enp2s3: link down
[ 717.380879] 8139too 0000:02:03.0 enp2s3: link up, 100Mbps, full-duplex, lpa 0x41E1
[ 726.447184] 8139too 0000:02:03.0 enp2s3: link down
[ 727.596128] ACPI: \_SB_.PCI0.LPC0.ACAD: ACPI_NOTIFY_BUS_CHECK event: unsupported
[ 732.616138] 8139too 0000:02:03.0 enp2s3: link up, 100Mbps, full-duplex, lpa 0x41E1
[ 733.848832] 8139too 0000:02:03.0 enp2s3: link down
[ 834.062062] 8139too 0000:02:03.0 enp2s3: link up, 100Mbps, full-duplex, lpa 0x41E1
[ 2131.449211] perf samples too long (2534 > 2500), lowering kernel.perf_event_max_sample_rate to 50100
This is when i run sudo lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 149.1G 0 disk
|-sda1 8:1 0 9.8G 0 part /boot
|-sda2 8:2 0 1K 0 part
|-sda3 8:3 0 53.6G 0 part
`-sda5 8:5 0 85.7G 0 part /
sr0 11:0 1 1024M 0 rom
My syslinux is
LABEL arch
MENU LABEL Arch Linux
LINUX ../vmlinuz-linux
APPEND root=/dev/sda5 rw
INITRD ../initramfs-linux.img
LABEL windows
MENU LABEL Windows
COM32 chain.c32
APPEND hd0 3
NOTE: chain is in the same directory with syslinux
I really think Windows got corrupted but not sure. Thought about repairing the mbr on windows and booting to it then reinstall syslinux but really don't want too.
Thanks in advance
Last edited by jag-ster (2014-11-27 02:12:12)

Here is the partition table:
/dev/sda1 one HUGE linux /boot primary partition (assuming ext4)
/dev/sda2 "name" of the extended partition
/dev/sda3 primary Windows partition (assuming NTFS)
/dev/sda5 logical Linux root partition (assuming ext4)
/dev/sda1 to /dev/sda4 are either all primary, or three primary and one extended. After /dev/sda4 all partitions are logical. If you're still wondering why is there no /dev/sda4, it's because you have 2 primary and one extended, so /dev/sda4 is reserved for another primary partition.
Windows problem:
The /dev/sda1 which Windows named C: is Windows equivalent of linux /boot. When you told linux to place its /boot on /dev/sda1 it formated boot files of Windows. Now you have Windows OS with no kernel. In other words there is no way to boot Windows if you don't reinstall it. Actually there is a way, but you would than screw up Arch.
Mounting problem:
You can never mount extended partition, only logical (an extended partition is made of logical partitions). You want to do:
sudo mount /dev/sda3 -t NTFS-3g -o rw,uid=YourUserName /path/where/you/want/this/partition/mounted
EDIT:
Try it this way:
- Backup all your data
- Delete every partition
- Start Windows installation
- Make only one partition (c:/ for Windows)
- Let Windows make another partition
- Make one more so you could have a data partition, which does not need to be formated to reinstall Windows
- Start Arch installation
- Get to partitioning
=Partitioning=
- /dev/sda4 extended (take the rest of the drive)
- /dev/sda5 logical /boot 512MiB
- /dev/sda6 logical / 20GiB
- /dev/sda7 logical /home (the rest)
Making a separate /home partition will come in handy when reinstalling Arch (any linux distribution), or switching between distros, because it is the equivalent of D:/ in Windows. Also consider LVM.
Last edited by bstaletic (2014-02-28 23:25:33)

[Solved]dual boot windows 7 and arch linux

I have successfully installed arch linux dual boot with the original win7 on my PC. If I only use linux, then the system works well. The problem is that once I boot into Win7 then after reboot, the linux boot manager will stop working and the system always boots into windows automatically. My guess is Win7 automatically repair the boot loader.
My current solution is whenever I have finished using Windows, I'll boot with my linux USB installation, and run "gummiboot --path=/boot install". Afterwards, linux will work fine. But I believe there must be a better solution. Any help will be appreciated.
I have UEFI board by the way.
Last edited by jl2014 (2015-04-19 17:35:57)

Thanks for all your help first! I have tried Head_on_a_Stick's suggestions as the first step. Here is what I did. I have created :
$ cat /boot/loader/entries/windows.conf
title Windows
efi /EFI/hidden/Boot/bootmgfw.efi
The window boot path was :
/boot/EFI/Microsoft/Boot/bootmgfw.efi
and I changed
/boot/EFI/Microsoft
to
/boot/EFI/hidden
After reboot, I clicked 'Windows' option on the linux boot manager. Below are the error messages:
Windows failed to start.
File: \EFI\Microsoft/Boot/BCD
Info: An error occurred while attempting to read the boot configuration data.
Any idea what goes wrong?
I'll try other suggestions soon. Thanks all of you again.
Last edited by jl2014 (2015-04-19 00:03:33)

My iMac can't boot Windows 7 From USB while my Macbook Pro can do it

I install Windows 7 64 bit and rEFIt into a USB hard disk and hope to boot from my iMac 27" (2010 Mid). However, it shows that no boot deivce is found.
If I plug the SAME disk to my Macbook Pro 17" (2009 Mid), it can boot Windows 7 without any problem.
I tried with Linux and get same result, iMac says no boot device while my Macbook Pro can boot it without problem.
I tried experiment for weeks and still can't get iMac work.
I think it is very abnormal and I wonder if someone can tell me how to fix it or any directory to solve this problem.

My iMac runs snow leopard and my MacBook pro runs Lion. Both of them are updated with latest updated. I just get one external USB hard disk with Windows 7 32 bit installed and magically, my iMac can boot it from rEFIt. However, I don't know what makes it works. I tried to make same configuration, software and steps on other USB hard disks for hundreds times but I can repeat it again. All other attempt can make USB hard disk boot on MacBook Pro but not iMac only.

[SOLVED] dual booting windows 7 with btrfs on grub-bios -- core.img

I am trying to install arch in a dual boot configuration with an existing windows 7 partition. I have everything from the beginner's guide done but the bootloader. When I run grub-install it tells me that core.img is too big.
Some googling tells me that this is relatively common with btrfs, and it seems the only work around is to switch to gpt mode and use a grub bios partition. But the info I've seen indicates that I need to use MBR mode to dual boot windows.
Is it safe to do this with windows? Is there another workaround? Or will I have to settle for ext4?
Last edited by jorenko (2013-06-09 03:53:24)

Well there's your problem, your first partition starts at sector 63. With recent versions of windows and fdisk (and every other partitioning tool I can think of off the top of my head) things now align themselves correctly. Also because there is now GPT, the first partition typically starts later as the GPT partition table will typically sit between the MBR and the first partition.
On a MBR partitioned system, grub2 will actually use the first 446 bytes like normal, but will then also use the space that is empty where GPT would sit. This is why when you have a GPT partitioned system, it will require you to create a 1-2MB grub boot partition, as it needs somewhere else to put its bloat. GPT actually still uses the MBR section, but simply creates one large partition covering the whole disk. This is so that tools that are not GPT aware will not think that they have a whole free disk to use as they please.
For comparison, here is whe I get from fdisk:
# fdisk -l /dev/sda
sudo fdisk -l /dev/sda
[sudo] password for curtisshima:
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sda: 250.1 GB, 250059350016 bytes, 488397168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt
# Start End Size Type Name
1 2048 2099199 1G EFI System EFI System
2 2099200 252166798 119.2G Linux filesyste arch-btrfs-1
3 252168192 488397134 112.7G Linux filesyste arch-btrfs-3
Note that I do use GPT. But that is not the point here. What I am trying to show is where my first partition starts. This is also where fdisk will start partitions these days. This is to ensure compatibility with 4k advanced format disks.
If you are not dead set on Grub2, you could try using syslinux. I really like it much better, though if you are booting more than one Linux, you need to either employ chainloading to various partition boot records, or have a shared /boot. Having a windows partition doens't really matter, as you are simply chainloading to that funky reserved partition anyway.
The other option is to use grub-legacy, which can still be found in the AUR. I actually liked the orginal Grub, as it provided a nice feature set, but was still configurable by hand and it actually fit into the MBR.

How To Boot Windows 7 from Windows 7 DOS Prompt?

I got hit by the GVU virus. Spent a week poking around and made some interesting discoveries!
The GVU virus appears to lock you out of your computer always going to a page in german demanding 100 euros to restore it.
If you reboot while pressing F8 you can get to the debug page which lists several options including boot to DOS prompt.
Select this option.
Windows 7 will boot and ask you to login. Do this.
Your computer will now go to the DOS prompt.
On a second computer I installed an up to date copy of Spybot. Using explorer I found the Spybot directory tree under Program files and copied it to a jump drive.
Remove the jump drive from the second computer and insert it in your sick computer.
On the sick computer you are at the DOS Prompt. Type explorer and press enter.
A window will open similar to windows 7 explorer. Right clicks will not work, but you will find all the usual right click menu items under Files and Edit on the menu bar.
Click View then Refresh to display your jump drive. You may have to do this a couple of times, but your jump drive will appear in the usual spot.
Select the spybot directory on your jump drive and launch spybot. Run a systems scan and delete every thing it finds. Do this step Several times.
Reboot your computer.
Select Boot windows as normal.
It will ask you to login in. Do so.
Your computer will boot to explorer, the version that you saw in step 9.
Press CTL + ALT + Delete then select Task Manager
Task Manager will launch. If you click the process tab you will see only ten or so processes are running.
Click on the applications tab, then in the bottom right corner click on the button New Task.
Type win and press enter.
You will notice that the number of processes will jump to 90 give or take. When CPU use drops to 5% again or there abouts click new task again.
You are now in windows 7 minus the task bar but with networking etc.
Enter a windows program such as Outlook and press enter. Outlook will boot and run perfectly. I suspect that most windows programs will also run perfectly.
I know if you boot from your windows 7 DVD you can repair your system to normal. My question is can I do this without the disk? At this point I can do all my usual tasks, just without the convenience of the task bar and start button. I
am in the middle of unpacking from a move, cannn't find my Windows 7 install disk. I am so close to getting this computer back to running normally but I am not sure what to do next. Can someone help?
Bob Jones

Hi,
If you system files are corrupted, we can use SFC to fix missing and corrupted system file:
http://support.microsoft.com/kb/929833/en-us
this could be performed in command prompt mode.
If you have any feedback on our support, please click
here
Alex Zhao
TechNet Community Support

[Forum FAQ] Error 0xc0000428 when booting Windows 8 from Windows 7 BCD

Scenario
To better analyze this issue, I introduce my test environment firstly.
I have installed Windows 7 and Windows 8 in separate disks (Figure 1)
Disk1 (only one partition, C drive): storing BCD
Disk2 (only one partition, D drive): storing Win 7 system files
Disk3 (only one partition, E drive): storing Win 8 system files
Figure 1.
Then I performed the steps below to boot Windows 8:
Step 1: Boot the computer from Operation System installation media, then I formatted Disk1 to NTFS and activated it via Diskpart Command-Line Utility. You can use the commands
below in order to achieve that (Figure 2):
List volume
Select volume x
Format fs=ntfs quick
Active
Figure 2.
Step 2: I copied the boot files from Windows 7 disk via BCDboot command below:
Bcdboot d:\windows /s c:
Step 3: I edited the BCD file to add an entry for Windows 8 using the command below:
Bcdedit /store c:\boot\bcd /create /application osloader
Steps 4: Since the command above will create a GUID of a new boot object for Windows 8, we can use the following command to represent the GUID:
Bcdedit /store c:\boot\bcd /set {GUID} device partition=E:
Bcdedit /store c:\boot\bcd /set {GUID} osdevice partition=E:
Bcdedit /store c:\boot\bcd /set {GUID} description “win8”
Bcdedit /store c:\boot\bcd /set {GUID} path \windows\system32\winload.exe
Bcdedit /store c:\boot\bcd /set {GUID} systemroot \windows
Bcdedit /store c:\boot\bcd /displayorder {GUID} /addlast
Steps 5: I checked the BCD files by running bcdedit command. (Figure 3)
Figure 3.
Symptom
When I rebooted the computer and selected Windows 8 Operating System to boot, then I encountered the following error message (Figure 4):
File: \windows\system32\winload.exe
Status: 0xc0000428
Info: Windows cannot verify the digital signature for this file
Figure 4.
Cause
This issue is due to the bootmgr file, we cannot use the bootmgr file of Windows 7 to find the Windows 8 Operating System files.
Solution
According to my scenario, I just need to replace the bootmgr file with the bootmgr file residing in the root directory of Windows 8 Operating System.
If you want to replace it via the command prompt, it is necessary to un-hide the hidden file in the root directory of C and E drive before coping the file. You can use the
commands below to do that:
attrib c:\bootmgr -h -s
attrib e:\bootmgr -h -s
Copy e:\bootmgr c:\bootmgr /y
More information:
A Description of the Diskpart Command-Line Utility
http://support.microsoft.com/kb/300415
BCDboot Command-Line Options
http://technet.microsoft.com/en-au/library/hh824874.aspx
Please click to vote if the post helps you. This can be beneficial to other community members reading the thread.

Cause
This issue is due to the bootmgr file, we cannot use the bootmgr file of Windows 7 to find the Windows 8 Operating System files.
The Windows 7 bootmgr can indeed boot Windows 8.
This is on a BIOS system
https://www.youtube.com/watch?v=AVO5aeaKeeE
This is on a UEFI system
https://www.youtube.com/watch?v=g3-K6Fyobz0
The Windows 8 bootmgr partially loads Windows 8 before offering the boot menu. By choosing Windows 7, the system must do a reboot. Using the Windows 7 bootmgr, no reboot is required.
"Let them that don't want it have memories of not gettin' any." "Gratitude is riches and complaint is poverty and the worst I ever had was wonderful." Brother Dave Gardner. "Experience is what you get when you're looking for something
else." Sir Thomas Robert Deware

[Solved] Howto boot Windows 7 from grub2 and uefi?

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