[SOLVED] Almost succesfully EFI install. Error: unable det.... root..

Question

Hello
I almost did a EFI install of Arch.
I've followed the wiki. But as you boot with bios, efibootmgr didn't work. So, as solution, and it's not in the wiki I put the grubx64.efi as bootx64.efi in /boot/efi/EFI/BOOT/. This is where EFI search  the file bootx64.efi to launch, if a bootloader wasn't fixed before.
It works. I achieve at grub's menu, and launch Arch. But from there I get the next:
ERROR: unable to determine major/minor number of root device "UUID=......."
ERROR: UUID=..... no such file o directory
ERROR unable to determine the file system type of
I've tryed do a mkinitcipio without autodetect HOOK. But the same.
I think it is GRUB2, but for me, five days with EFI (at least), three install tryes, too much for me. I can't do more search.
(it's a usb and use HOOK usb too)
Thankyou by your time.
Last edited by Alber (2012-07-17 11:59:32)

Answer 1

Hello.
I read several post. The solution was either delete the "autodetect" HOOK, or Grub2 config. But I tried to understand this file, and it looks like fine to me. But I have no experience in that so it could be wrong.
Fallback entry no works.
My fstab:
# <file system> <dir> <type> <options> <dump> <pass>
tmpfs /tmp tmpfs nodev,nosuid 0 0
UUID=dc65138c-aa2c-45aa-ba83-71be6b9a51d6 / ext4 defaults 0 1
UUID=087141f8-e460-448f-91fe-45ad290454c9 /var ext4 defaults 0 2
UUID=7D8C-C20F /boot/efi vfat defaults 0 2
UUID=7e6bdfb0-9bc2-426b-99cf-3942510c3273 /home ext4 defaults 0 2
UUID=8350f0a8-3374-4c18-86b8-0b23b69b8654 /boot ext4 defaults 0 2
gdisk output:
GPT fdisk (gdisk) version 0.8.5
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Command (? for help): Disk /dev/sdb: 31275008 sectors, 14.9 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 72D56917-9541-4E03-B6E6-CFFCC5449557
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 31274974
Partitions will be aligned on 2048-sector boundaries
Total free space is 169917 sectors (83.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 2048 616447 300.0 MiB EF00 Dummy_efi
2 616448 1026047 200.0 MiB 8300 Dummy_boot
3 1026048 17803263 8.0 GiB 8300 Dummy_root
4 17803264 26191871 4.0 GiB 8300 Dummy_var
5 26191872 31107071 2.3 GiB 8300 Dummy_home
/boot/grub/grub.cfg
### 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='hd1,gpt3'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt3 --hint-efi=hd1,gpt3 --hint-baremetal=ahci1,gpt3 dc65138c-aa2c-45aa-ba83-71be6b9a51d6
else
search --no-floppy --fs-uuid --set=root dc65138c-aa2c-45aa-ba83-71be6b9a51d6
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 GNU/Linux, with Linux core repo kernel' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-core repo kernel-true-dc65138c-aa2c-45aa-ba83-71be6b9a51d6' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd1,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt2 --hint-efi=hd1,gpt2 --hint-baremetal=ahci1,gpt2 8350f0a8-3374-4c18-86b8-0b23b69b8654
else
search --no-floppy --fs-uuid --set=root 8350f0a8-3374-4c18-86b8-0b23b69b8654
fi
echo 'Loading Linux core repo kernel ...'
linux /vmlinuz-linux root=UUID=dc65138c-aa2c-45aa-ba83-71be6b9a51d6 ro quiet add_efi_memmap
echo 'Loading initial ramdisk ...'
initrd /initramfs-linux.img
menuentry 'Arch Linux GNU/Linux, with Linux core repo kernel (Fallback initramfs)' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-core repo kernel-fallback-dc65138c-aa2c-45aa-ba83-71be6b9a51d6' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd1,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt2 --hint-efi=hd1,gpt2 --hint-baremetal=ahci1,gpt2 8350f0a8-3374-4c18-86b8-0b23b69b8654
else
search --no-floppy --fs-uuid --set=root 8350f0a8-3374-4c18-86b8-0b23b69b8654
fi
echo 'Loading Linux core repo kernel ...'
linux /vmlinuz-linux root=UUID=dc65138c-aa2c-45aa-ba83-71be6b9a51d6 ro quiet add_efi_memmap
echo 'Loading initial ramdisk ...'
initrd /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 ###
### 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.
### 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 ###
I'll go to try to change grub.conf:
It could be that firmware was getting another disk. So I'll change hd1 to hd2 or hd0.
I have to read grub2 wiki to asure where root must be pointing.
Added: Maybe ext2 must be ext4?.
NO, it wasn't
Last edited by Alber (2012-07-13 11:36:46)