[SOLVED] disk `hd0,4' not found

bayou self · 12-14-2021, 07:13 PM

I got in!

Code:

grub> linux (hd1,2)/boot/vmlinuz-5.13.12-lfs-11.0 root=/dev/sda4

colorpurple21859 · 12-14-2021, 07:23 PM

Thats good, looks like you may have a boot parition.
another command that may work

Code:

configfile (hd1,2)/boot/grub/grub.cfg

or

Code:

configfile (hd1,1)/efi/debian/grub.cfg

bayou self · 12-14-2021, 07:35 PM

Thank you very much, colorpurple21859!
I'm sure I'll have more questions tomorrow!

colorpurple21859 · 12-14-2021, 07:39 PM

You're Welcome

bayou self · 12-15-2021, 07:53 AM

I need to repair my grub. I'm typing from my screen to a laptop. Still cannot get back into Debian. Without the host system, I don't know how to effect any changes.

Here is the LFS grub.cfg file

Code:

grub> cat (hd0,2)/boot/grub/grub.cfg
# Begin /boot/grub/grub.cfg
set default=0
set timeout=5

insmod part_gpt
insmod ext2
set root=(hd0,4)

if loadfont /boot/grub/fonts/unicode.pf2; then
   set gfxmode=auto
   insmod all_video
   terminal_output gfxterm
fi

menuentry "GNU/Linux, Linux 5.13.12-lfs-11.0"  {
   linux /boot/vmlinux-5.13.12-lfs-11.0 root=/dev/sda4 ro
}

menuentry "Firmware Setup" {
   fwsetup
}

When I type

Code:

configfile (hd0,2)/boot/grub/grub.cfg

I am taken back to the opening menu.

colorpurple21859 · 12-15-2021, 08:18 AM

Quote:

prefix=(hd0,msdos1)/grub/grub

this is the location the grub bootloader is looking for the grub.cfg file. Grub counts drives from 0 and partitions from 1. If you copy the grub.cfg to this location should give you the grub menu.

This should allow you to boot into debian may have to change sdb2 to sda2 or sdc2

Code:

grub> insmod part_gpt
grub> linux (hd1,2)/vmlinuz root=/dev/sdb2
grub> initrd (hd1,2)/initrd.img

after booting into one of your systems, post the output of

Code:

efibootmgr

bayou self · 12-15-2021, 09:19 AM

efibootmgr

Code:

BootCurrent: 0001
Timeout: 0 seconds
BootOrder: 0001,0003,0009,000A,0000,0002
Boot0000  ubuntu
Boot0001* debian
Boot0002  DEB
Boot0003* LFS
Boot0009  Onboard NIC (IPV4)
Boot000A  Onboard NIC (IPV6)

bayou self · 12-15-2021, 09:27 AM

/etc/fstab

Code:

#file system   mount-point    type     options               dump    fsck order
/dev/sda4          /          ext4     defaults               1         1
/dev/sda3        swap         swap     pri=1                  0         0
proc             /proc        proc     nosuid,noexec,nodev    0         0
sysfs            /sys         sysfs    nosuid,noexec,nodev    0         0
devpts           /dev/pts     devpts   gid=5,mode=620         0         0
tmpfs            /run         tmpfs    defaults               0         0
devtmpfs         /dev         devtmpfs mode=0755,nosuid       0         0

colorpurple21859 · 12-15-2021, 10:10 AM

Is the fstab debian or lfs?
Are you able to boot into debian with post 21?
post the output of

Code:

df -h
lsblk -f

bayou self · 12-15-2021, 10:56 AM

The fstab was LFS.

I was not able to boot into debian per Post #21.
When I typed it as is, it showed `hd1,2 not found'.
When I substituted hd0 for hd1, it froze.

Code:

df -h
/dev/root    /
devtmpfs     /dev
tmpfs        /run

Code:

lsblk -f
sda1  vfat   FAT32
sda2  ext4   1.0
sda3  swap   1        [SWAP]
sda4  ext4   1.0      /

colorpurple21859 · 12-15-2021, 11:01 AM

when I originally posted 21, I left out insmod part_gpt, I went back and changed it. Did you try it after I corrected the error? That was based on post 15.

bayou self · 12-15-2021, 11:16 AM

I was able to get into debian (sort of)

by substituting hd0 for hd1 in Post #21!
However, it says "/dev/sdb2 does not exist. Dropping to a shell!" My prompt is (initramfs)

I do not know how to copy grub.cfg to (hd0,msdos1)/grub/grub.

EDIT: I'm back into debian all the way, by substituting sda2 for sdb2.
Thank you so much!
I don't mind manually entering all the boot specifics, but I would still like to fix grub.

colorpurple21859 · 12-15-2021, 12:45 PM

boot into debian and as root run

Code:

grub-install

bayou self · 12-15-2021, 01:20 PM

Yes, sir!

Code:

bash-5.1# sudo grub-install
Installing for x86_64-efi platform.
Installation finished. No error reported.
bash-5.1#

colorpurple21859 · 12-15-2021, 02:18 PM

Did that fix the grub Problem for debian?