[Solved] Can't boot into Arch after deleting some partitons

Question

About 6 months ago I installed Arch on a machine that used to run Ubuntu. Had some trouble at the time getting to boot into Arch but somehow managed. Now eventually decided to delete the old Ubuntu partitons to free up some space using gparted. Arch partition number changed from sda12 to sda6.
On rebooting after deleting ubuntu partitions with gparted, I got an ubuntu splash screen and a whole lot of ubuntu boot options. Somehow these were all contained in my Arch's /boot/grub/menu.lst. Arch is all on one partition and no separate boot partition (which I had with Ubuntu - maybe I haven't deleted that and this is the problem?). Will need to check that out.
I can chroot into Arch and did the following -
grub> find /boot/grub/stage1
(hd0,5)
grub> root (hd0,5)
Filesystem type is ext2fs, partition type 0x83
grub> setup (hd0)
Checking if "/boot/grub/stage1" exists... yes
Checking if "/boot/grub/stage2" exists... yes
Checking if "/boot/grub/e2fs_stage1_5" exists... yes
Running "embed /boot/grub/e2fs_stage1_5 (hd0)"... 16 sectors are embedded.
succeeded
Running "install /boot/grub/stage1 (hd0) (hd0)1+16 p (hd0,5)/boot/grub/stage2 /boot/grub/menu.lst"... succeed
ed
Done.
grub>
The Arch /boot/grub/menu.lst had a whole lot of ubuntu stuff in it but I edited to the following -
# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
# grub-md5-crypt, /usr/share/doc/grub
# and /usr/share/doc/grub-doc/.
## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not use 'savedefault' or your
# array will desync and will not let you boot your system.
default 0
## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout 3
## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
hiddenmenu
# Pretty colours
#color cyan/blue white/blue
## password ['--md5'] passwd
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line) and entries protected by the
# command 'lock'
# e.g. password topsecret
# password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
# password topsecret
# examples
# title Windows 95/98/NT/2000
# root (hd0,0)
# makeactive
# chainloader +1
# title Linux
# root (hd0,1)
# kernel /vmlinuz root=/dev/hda2 ro
# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST
## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,3)
title Arch uuid
#root (hd0,5)
uuid d15cf4f9-18ca-4ec5-95bc-db0f6f264736
kernel /boot/vmlinuz26 root=/dev/sda6 ro vga=775
intrd /boot/kernel26.img
title Arch hd
root (hd0,5)
kernel /boot/vmlinuz26 root=/dev/sda6
intrd /boot/kernel26.img
I have a bootinfo script which gives the following (from the chroot environment) -
Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================
=> Grub 0.97 is installed in the MBR of /dev/sda and looks on the same drive
in partition #6 for /boot/grub/stage2 and /boot/grub/menu.lst.
=> No boot loader is installed in the MBR of /dev/sdb
sda1: _________________________________________________________________________
File system: swap
Boot sector type: -
Boot sector info:
sda2: _________________________________________________________________________
File system: Extended Partition
Boot sector type: -
Boot sector info:
sda5: _________________________________________________________________________
File system: ext3
Boot sector type: -
Boot sector info:
Mounting failed:
mount: /dev/sda5 already mounted or sda5 busy
sda6: _________________________________________________________________________
File system: ext3
Boot sector type: -
Boot sector info:
Mounting failed:
mount: /dev/sda5 already mounted or sda5 busy
mount: /dev/sda6 already mounted or sda6 busy
sda7: _________________________________________________________________________
File system: ext3
Boot sector type: -
Boot sector info:
Operating System:
Boot files/dirs:
sda3: _________________________________________________________________________
File system: ext3
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 10.04.1 LTS
Boot files/dirs: /etc/fstab
sda4: _________________________________________________________________________
File system: ext3
Boot sector type: -
Boot sector info:
Operating System:
Boot files/dirs: /grub/menu.lst /grub/grub.cfg /grub/core.img
sdb1: _________________________________________________________________________
File system: xfs
Boot sector type: -
Boot sector info:
Operating System:
Boot files/dirs:
=========================== Drive/Partition Info: =============================
Drive: sda ___________________ _____________________________________________________
Disk /dev/sda: 750.2 GB, 750155292160 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465147055 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
Partition Boot Start End Size Id System
/dev/sda1 417,690 6,554,519 6,136,830 82 Linux swap / Solaris
/dev/sda2 25,414,954 1,465,144,064 1,439,729,111 5 Extended
/dev/sda5 25,414,956 1,360,287,809 1,334,872,854 83 Linux
/dev/sda6 1,360,287,873 1,423,198,349 62,910,477 83 Linux
/dev/sda7 1,423,198,413 1,465,144,064 41,945,652 83 Linux
/dev/sda3 6,554,520 25,414,829 18,860,310 83 Linux
/dev/sda4 * 63 417,689 417,627 83 Linux
Drive: sdb ___________________ _____________________________________________________
Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
Partition Boot Start End Size Id System
/dev/sdb1 2,048 1,953,523,711 1,953,521,664 83 Linux
blkid -c /dev/null: ____________________________________________________________
Device UUID TYPE LABEL
/dev/loop0 squashfs
/dev/sda1 2a95d85a-45fe-4584-88dd-0ee20e651ec5 swap
/dev/sda2: PTTYPE="dos" PART_ENTRY_SCHEME="dos" PART_ENTRY_TYPE="0x5" PART_ENTRY_NUMBER="2"
/dev/sda3 32495e1a-227c-4d23-9f63-b1319def0dd9 ext3
/dev/sda4 d6dc69b0-967d-4886-b62d-8c0d6be06b41 ext3
/dev/sda5 37971286-b8d3-4a1b-9f94-4008288fed6d ext3 data
/dev/sda6 d15cf4f9-18ca-4ec5-95bc-db0f6f264736 ext3 30GB-02
/dev/sda7 eb736131-b558-4404-9b83-7f1e6d9e76ae ext3 var
/dev/sda: PTTYPE="dos"
/dev/sdb1 0e83045d-a0bd-4d36-b61d-bdb905130dc2 xfs 1TB-04
/dev/sdb: PTTYPE="dos"
============================ "mount | grep ^/dev output: ===========================
Device Mount_Point Type Options
/dev/sda12 / ext3 (rw,commit=0)
=============================== sda3/etc/fstab: ===============================
# /etc/fstab: static file system information.
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sda1 = swap
/dev/sda1 none swap sw 0 0
# /dev/sda3 = root
#UUID=32495e1a-227c-4d23-9f63-b1319def0dd9
/dev/sda3 / ext3 relatime,errors=remount-ro 0 1
# /dev/sda4 = boot
# UUID=d6dc69b0-967d-4886-b62d-8c0d6be06b41
/dev/sda4 /boot ext3 relatime 0 2
# /dev/sda5 = home
# UUID=670eee83-0a3e-429c-863f-b9ecced9f97e
/dev/sda5 /home ext3 relatime 0 2
#/dev/sda6
#UUID=37971286-b8d3-4a1b-9f94-4008288fed6d
/dev/sda6 /home/ben/Data ext3 defaults,relatime 0 0
# /dev/sda7
# UUID=fdb14ca4-d71d-489f-a00e-6e608770674c
/dev/sda7 /var ext3 relatime 0 2
# /dev/sda8
/dev/sda8 /opt ext3 relatime 0 2
# /dev/sda10 - Arch
/dev/sda10 /mnt/arch ext3 relatime 0 2
# Not sure what this is doing here
# Have commented it out - May be the reason why xbmc and mythtv were crashing on dvd insert and play
# /dev/hda /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
# /dev/sde1
# uuid appears to be 644406B3570C1846 -> ../../sde1
#/dev/sde1 /home/ben/Data/TVRecordings-1TB01 xfs defaults,relatime 0 0
#1TB-01
UUID=76f3823a-81dc-45c9-a0b7-2bc6c3beb2f8 /media/1TB-01 xfs noatime,nodiratime,allocsize=512m 0 0 #remove
d defaults, relatime
# 1TB-02
UUID=59cbf7a1-7008-40d0-96ed-c6f231823d4f /media/1TB-02 xfs noatime,nodiratime,allocsize=512m 0 0 #remove
d defaults, relatime
# 1TB-03
UUID=0e936800-3c53-4b87-abc8-19be0ffca7f9 /media/1TB-03 xfs noatime,nodiratime,allocsize=512m 0 0 #remove
d defaults, relatime
# 750GB-02 ext3 Partition
# UUID giving problems, trying with dev
# UUID=c23b9c9a-66fc-4256-9211-73156c1ac64a /media/750GB-02_ext3 ext3 defaults,relatime 0 0
/dev/sde2 /media/750GB-02_ext3 ext3 defaults,relatime 0 0
============================= sda4/grub/menu.lst: =============================
# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
# grub-md5-crypt, /usr/share/doc/grub
# and /usr/share/doc/grub-doc/.
## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not use 'savedefault' or your
# array will desync and will not let you boot your system.
default 0
## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout 3
## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
hiddenmenu
# Pretty colours
#color cyan/blue white/blue
## password ['--md5'] passwd
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line) and entries protected by the
# command 'lock'
# e.g. password topsecret
# password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
# password topsecret
# examples
# title Windows 95/98/NT/2000
# root (hd0,0)
# makeactive
# chainloader +1
# title Linux
# root (hd0,1)
# kernel /vmlinuz root=/dev/hda2 ro
# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST
### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below
## DO NOT UNCOMMENT THEM, Just edit them to your needs
## ## Start Default Options ##
## default kernel options
## default kernel options for automagic boot options
## If you want special options for specific kernels use kopt_x_y_z
## where x.y.z is kernel version. Minor versions can be omitted.
## e.g. kopt=root=/dev/hda1 ro
## kopt_2_6_8=root=/dev/hdc1 ro
## kopt_2_6_8_2_686=root=/dev/hdc2 ro
# kopt=root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro
## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,3)
## should update-grub create alternative automagic boot options
## e.g. alternative=true
## alternative=false
# alternative=true
## should update-grub lock alternative automagic boot options
## e.g. lockalternative=true
## lockalternative=false
# lockalternative=false
## additional options to use with the default boot option, but not with the
## alternatives
## e.g. defoptions=vga=791 resume=/dev/hda5
# defoptions=quiet splash
## should update-grub lock old automagic boot options
## e.g. lockold=false
## lockold=true
# lockold=false
## Xen hypervisor options to use with the default Xen boot option
# xenhopt=
## Xen Linux kernel options to use with the default Xen boot option
# xenkopt=console=tty0
## altoption boot targets option
## multiple altoptions lines are allowed
## e.g. altoptions=(extra menu suffix) extra boot options
## altoptions=(recovery) single
# altoptions=(recovery mode) single
## controls how many kernels should be put into the menu.lst
## only counts the first occurence of a kernel, not the
## alternative kernel options
## e.g. howmany=all
## howmany=7
# howmany=all
## should update-grub create memtest86 boot option
## e.g. memtest86=true
## memtest86=false
# memtest86=true
## should update-grub adjust the value of the default booted system
## can be true or false
# updatedefaultentry=false
## should update-grub add savedefault to the default options
## can be true or false
# savedefault=false
## ## End Default Options ##
title Ubuntu 10.04.1 LTS, kernel 2.6.32-26-generic
root (hd0,3)
kernel /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd /initrd.img-2.6.32-26-generic
quiet
title Ubuntu 10.04.1 LTS, kernel 2.6.32-26-generic (recovery mode)
root (hd0,3)
kernel /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
initrd /initrd.img-2.6.32-26-generic
title Ubuntu 10.04.1 LTS, kernel 2.6.32-24-generic
root (hd0,3)
kernel /vmlinuz-2.6.32-24-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd /initrd.img-2.6.32-24-generic
quiet
title Ubuntu 10.04.1 LTS, kernel 2.6.32-24-generic (recovery mode)
root (hd0,3)
kernel /vmlinuz-2.6.32-24-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
initrd /initrd.img-2.6.32-24-generic
title Ubuntu 10.04.1 LTS, kernel 2.6.32-23-generic
root (hd0,3)
kernel /vmlinuz-2.6.32-23-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd /initrd.img-2.6.32-23-generic
quiet
title Ubuntu 10.04.1 LTS, kernel 2.6.32-23-generic (recovery mode)
root (hd0,3)
kernel /vmlinuz-2.6.32-23-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
initrd /initrd.img-2.6.32-23-generic
title Ubuntu 10.04.1 LTS, kernel 2.6.32-22-generic
root (hd0,3)
kernel /vmlinuz-2.6.32-22-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd /initrd.img-2.6.32-22-generic
quiet
title Ubuntu 10.04.1 LTS, kernel 2.6.32-22-generic (recovery mode)
root (hd0,3)
kernel /vmlinuz-2.6.32-22-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
initrd /initrd.img-2.6.32-22-generic
title Ubuntu 10.04.1 LTS, memtest86+
root (hd0,3)
kernel /memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
============================= sda4/grub/grub.cfg: =============================
# DO NOT EDIT THIS FILE
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="0"
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 recordfail {
set recordfail=1
if [ -n ${have_grubenv} ]; then if [ -z ${boot_once} ]; then save_env recordfail; fi; fi
insmod ext2
set root='(hd0,3)'
search --no-floppy --fs-uuid --set 32495e1a-227c-4d23-9f63-b1319def0dd9
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
set locale_dir=($root)/grub/locale
set lang=en
insmod gettext
if [ ${recordfail} = 1 ]; then
set timeout=-1
else
set timeout=10
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, with Linux 2.6.32-26-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
linux /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd /initrd.img-2.6.32-26-generic
menuentry 'Ubuntu, with Linux 2.6.32-26-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu -
-class os {
recordfail
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
echo 'Loading Linux 2.6.32-26-generic ...'
linux /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-26-generic
menuentry 'Ubuntu, with Linux 2.6.32-24-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
linux /vmlinuz-2.6.32-24-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd /initrd.img-2.6.32-24-generic
menuentry 'Ubuntu, with Linux 2.6.32-24-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu -
-class os {
recordfail
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
echo 'Loading Linux 2.6.32-24-generic ...'
linux /vmlinuz-2.6.32-24-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-24-generic
menuentry 'Ubuntu, with Linux 2.6.32-23-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
linux /vmlinuz-2.6.32-23-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd /initrd.img-2.6.32-23-generic
menuentry 'Ubuntu, with Linux 2.6.32-23-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu -
-class os {
recordfail
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
echo 'Loading Linux 2.6.32-23-generic ...'
linux /vmlinuz-2.6.32-23-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-23-generic
menuentry 'Ubuntu, with Linux 2.6.32-22-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
linux /vmlinuz-2.6.32-22-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd /initrd.img-2.6.32-22-generic
menuentry 'Ubuntu, with Linux 2.6.32-22-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu -
-class os {
recordfail
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
echo 'Loading Linux 2.6.32-22-generic ...'
linux /vmlinuz-2.6.32-22-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-22-generic
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
linux16 /memtest86+.bin
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
linux16 /memtest86+.bin console=ttyS0,115200n8
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Arch Linux (on /dev/sda10)" {
insmod ext2
set root='(hd0,10)'
search --no-floppy --fs-uuid --set 26851879-58d1-4d65-90b4-e0845fe1176c
linux /boot/vmlinuz26 root=/dev/sda10 ro
initrd /boot/kernel26.img
menuentry "Arch Linux Fallback (on /dev/sda10)" {
insmod ext2
set root='(hd0,10)'
search --no-floppy --fs-uuid --set 26851879-58d1-4d65-90b4-e0845fe1176c
linux /boot/vmlinuz26 root=/dev/sda10 ro
initrd /boot/kernel26-fallback.img
#### 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.
# From Arch grub menu.lst
# (0) Arch Linux
#title Arch Linux [/boot/vmlinuz26]
#root (hd0,0)
#kernel /vmlinuz26 root=/dev/sda3 ro
#initrd /kernel26.img
#Note: With a separate boot partition, omit /boot from the path, (i.e. type set prefix=(hdX,Y)/grub and insmod
(hdX,Y)/grub/linux.mod).
#This introduces the "linux" and "initrd" commands, which should be familiar (see #Configuration).
#An example, booting Arch Linux:
#set root=(hd0,5)
#linux /boot/vmlinuz26 root=/dev/sda5
#initrd /boot/kernel26.img
#boot
###menuentry "Arch1" {
###insmod ext2
###set root='(hd0,10)'
#search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 = FOR UBUNTU THIS IS THE BOOT
PARTITION
#linux /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash = FOR
UBUNTU THIS IS THE ROOT PARTITION
#initrd /initrd.img-2.6.32-26-generic
###search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 # UBUNTU'S BOOT PARTITION UU
ID
###linux /boot/vmlinuz-26 root=635d7d02-3f5b-4af6-9c74-16b2af8cc7fd ro quiet splash # ARCH'S ROOT UUID
###initrd /boot/kernel26.img
# /dev/sda10 uuid = 635d7d02-3f5b-4af6-9c74-16b2af8cc7fd - obtain using ls -l /dev/disk/by-uuid/
###menuentry "Arch2" {
###insmod ext2
###set root='(hd0,4)' #= TRYING UBUNTU'S BOOT
#search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 = FOR UBUNTU THIS IS THE BOOT
PARTITION
#linux /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash = FOR
UBUNTU THIS IS THE ROOT PARTITION
#initrd /initrd.img-2.6.32-26-generic
#search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 # UBUNTU'S BOOT PARTITION UUID
###linux /boot/vmlinuz-26 root=/dev/sda10 ro quiet splash # TRYING ARCH'S ROOT DEVICE FORMAT
###initrd /boot/kernel26.img
# /dev/sda10 uuid = 635d7d02-3f5b-4af6-9c74-16b2af8cc7fd - obtain using ls -l /dev/disk/by-uuid/
###menuentry "Arch3" {
###insmod ext2
###set root='(hd0,10)' #= TRYING UBUNTU'S BOOT IN HD FORMAT
#search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 = FOR UBUNTU THIS IS THE BOOT
PARTITION
#linux /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash = FOR
UBUNTU THIS IS THE ROOT PARTITION
#initrd /initrd.img-2.6.32-26-generic
#search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 # UBUNTU'S BOOT PARTITION UUID
###linux /boot/vmlinuz-26 root=/dev/sda10 ro quiet splash # TRYING ARCH'S ROOT DEVICE FORMAT
###initrd /boot/kernel26.img
# /dev/sda10 uuid = 635d7d02-3f5b-4af6-9c74-16b2af8cc7fd - obtain using ls -l /dev/disk/by-uuid/
### END /etc/grub.d/40_custom ###
=================== sda4: Location of files loaded by Grub: ===================
.0GB: grub/core.img
.0GB: grub/grub.cfg
.0GB: grub/menu.lst
.0GB: grub/stage2
.0GB: initrd.img-2.6.32-22-generic
.0GB: initrd.img-2.6.32-23-generic
.1GB: initrd.img-2.6.32-24-generic
.1GB: initrd.img-2.6.32-26-generic
.0GB: vmlinuz26
.0GB: vmlinuz-2.6.32-22-generic
.0GB: vmlinuz-2.6.32-23-generic
.1GB: vmlinuz-2.6.32-24-generic
.0GB: vmlinuz-2.6.32-26-generic
=============================== StdErr Messages: ===============================
No volume groups found
mdadm: No arrays found in config file or automatically
[/quote]
Output of fdisk -l from chroot is -
[quote]Disk /dev/sda: 750.2 GB, 750155292160 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465147055 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 identifier: 0x0000b084
Device Boot Start End Blocks Id System
/dev/sda1 417690 6554519 3068415 82 Linux swap / Solaris
/dev/sda2 25414954 1465144064 719864555+ 5 Extended
/dev/sda3 6554520 25414829 9430155 83 Linux
/dev/sda4 * 63 417689 208813+ 83 Linux
/dev/sda5 25414956 1360287809 667436427 83 Linux
/dev/sda6 1360287873 1423198349 31455238+ 83 Linux
/dev/sda7 1423198413 1465144064 20972826 83 Linux
Partition table entries are not in disk order
Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 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
Disk identifier: 0x00025bd3
Device Boot Start End Blocks Id System
/dev/sdb1 2048 1953523711 976760832 83 Linux
I need to post this now and come back from a different machine to note the error messages I am now getting on boot. ...
Note that when I boot and press esc to get the menu I get the menu.lst I created (in the second quote) above in /dev/sda6, ie the one with the Arch hd and uuid entries - so grub is looking there and finding that menu.lst, but something goes wrong after that.
OK. Have now booted the machine and after pressing esc and selecting the uuid entry (the same thing happens with the hd entry) I get a whole lot of stuff, but what seems relevant is (typing it out) -
List of all partitions:
No filesystem could mount root, tried:
Kernel panic - not syncing: VS: Unable to mount root fs on unknown-block(0,0)
Pid: 1, comm: swapper Not tainted 2.6.39-Arch #1
If anyone can help I'd really appreciate it. This is my MythTV machine so the WAF is about to take a big dive!
If I could just install grub to the MBR as if this was a new installation of Arch that would be great.
I am really lost as to what is going on, which I'm sure is evident.
Thanks a lot
belbo
Last edited by belbo (2011-08-12 13:31:23)

Answer 1

Hi. Unfortunately that didn't help.
So next, based on this post https://wiki.archlinux.org/index.php/Ke … el_version I chrooted into Arch and (a) rolled back and (b) reinstalled my kernel but that didn't help either. I suspected it wouldn't because the kernel was working fine before I deleted the partitions in question.
[2011-08-08 23:32] ==> Image generation successful
[2011-08-08 23:32] upgraded kernel26 (2.6.39.3-1 -> 2.6.39.3-1)
I then did a pacman -Suy and the linux package has now replaced kernel26. ( See this wiki entry http://www.archlinux.org/news/changes-t … filenames/). I didn't change anything in menu.lst owing to this and it seems there is no need to. Unfortunately this hasn't helped either - still getting the kernel panic. 
Pacman.log relating to the new kernel package below -
[2011-08-09 00:22] Running 'pacman -Suy'
[2011-08-09 00:22] synchronizing package lists
[2011-08-09 00:23] starting full system upgrade
[2011-08-09 00:23] Running 'pacman -Suy'
[2011-08-09 00:23] synchronizing package lists
[2011-08-09 00:23] starting full system upgrade
[2011-08-09 00:26] removed python-mygpoclient (1.5-1)
[2011-08-09 00:26] removed kernel26 (2.6.39.3-1)
[2011-08-09 00:26] warning: /boot/grub/menu.lst installed as /boot/grub/menu.lst.pacnew
[2011-08-09 00:26] upgraded grub (0.97-17 -> 0.97-19)
[2011-08-09 00:26] upgraded icu (4.8-1 -> 4.8.1-1)
[2011-08-09 00:26] upgraded linux-firmware (20110512-2 -> 20110727-1)
[2011-08-09 00:26] >>> Updating module dependencies. Please wait ...
[2011-08-09 00:26] >>> Generating initial ramdisk, using mkinitcpio. Please wait...
[2011-08-09 00:26] ==> Building image from preset: 'default'
[2011-08-09 00:26] -> -k /boot/vmlinuz-linux -c /etc/mkinitcpio.conf -g /boot/initramfs-linux.img
[2011-08-09 00:26] ==> Starting build: 3.0-ARCH
[2011-08-09 00:26] -> Parsing hook: [base]
[2011-08-09 00:26] -> Parsing hook: [udev]
[2011-08-09 00:26] -> Parsing hook: [autodetect]
[2011-08-09 00:26] -> Parsing hook: [pata]
[2011-08-09 00:26] -> Parsing hook: [scsi]
[2011-08-09 00:26] -> Parsing hook: [sata]
[2011-08-09 00:26] -> Parsing hook: [filesystems]
[2011-08-09 00:26] -> Parsing hook: [usbinput]
[2011-08-09 00:26] ==> Generating module dependencies
[2011-08-09 00:26] ==> Creating gzip initcpio image: /boot/initramfs-linux.img
[2011-08-09 00:26] 7079 blocks
[2011-08-09 00:26] ==> Image generation successful
[2011-08-09 00:26] ==> Building image from preset: 'fallback'
[2011-08-09 00:26] -> -k /boot/vmlinuz-linux -c /etc/mkinitcpio.conf -g /boot/initramfs-linux-fallback.img -S autodetect
[2011-08-09 00:26] ==> Starting build: 3.0-ARCH
[2011-08-09 00:26] -> Parsing hook: [base]
[2011-08-09 00:26] -> Parsing hook: [udev]
[2011-08-09 00:26] -> Parsing hook: [pata]
[2011-08-09 00:26] -> Parsing hook: [scsi]
[2011-08-09 00:26] -> Parsing hook: [sata]
[2011-08-09 00:26] -> Parsing hook: [filesystems]
[2011-08-09 00:26] -> Parsing hook: [usbinput]
[2011-08-09 00:26] ==> Generating module dependencies
[2011-08-09 00:26] ==> Creating gzip initcpio image: /boot/initramfs-linux-fallback.img
[2011-08-09 00:26] 23360 blocks
[2011-08-09 00:26] ==> Image generation successful
[2011-08-09 00:26] installed linux (3.0.1-1)
I don't think I've mentioned that my old menu.lst seems to have disappeared and so must have been on one of the partitions that were deleted. I did have 2 Arch installations when I was setting things up months ago and that menu.lst may have been on the other partition but pointing to this partiton's kernel for booting. Presumably that's possible since this partiton is definitely the one I have been using for the last several months (confirmed by log and other files updated in the last few days etc). Even so, I suppose that probably wouldn't be relevant to this issue, since grub is finding the menu.lst on this partition when it boots so it is looking in the intended place now.
It seems I'm at a bit of a dead end. It seems these kernel panics are usually because there is something wrong with the kernel - which there wasn't with mine (and presumably the kernel in the new linux package is fine) or there is a typo in menu.lst (I can't see one and nobody has pointed one out yet) or menu.lst is pointing to the wrong partition (mine is pointing to the same partition and /boot directory that is found by grub - which is where my boot image is located - so it seems to be correct). I have nevertheless tried editing the menu.lst entry when booting to boot from different partitions but so far that hasn't worked either.
If anybody has other ideas I'd really appreciate it.
If not, some suggestions on re-installing would also be appreciated. I have a recent tar archive of the partition, but presumably reinstalling that wouldn't be of much use since it would just put back what is currently there. I guess that I need to format the partition, create a separate boot partition, do a fresh install of Arch into the formatted partition (and with boot in the new boot partition). And then restore my tar backup (excluding the boot directory) into the formatted partition?
Any assistance greatly appreciated.
Thanks
belbo
Last edited by belbo (2011-08-08 23:17:49)