Dev1 Galaxy Forum / Grub problem after installing new Kernel

Re: Grub problem after installing new Kernel

dummy@example.com (fsmithred) — Wed, 29 Mar 2023 15:41:29 +0000

Run these commands at the grub prompt. Adjust the device names if I guessed wrong. Use tab-completion to get the version strings on kernel and initrd. Last command is 'boot' and press ENTER (or maybe ctrl-x).

set root=(hd3,msdos1)     # assuming the /boot partition is sdc1
linux /vmlinuz- ro root=/dev/sdc2     # assuming the root partition is sdc2
initrd /initrd.img-
boot

After you boot into the system, get a root terminal and run update-grub That should create a new boot menu.

Re: Grub problem after installing new Kernel

dummy@example.com (rolfie) — Wed, 29 Mar 2023 15:40:00 +0000

See https://dev1galaxy.org/viewtopic.php?id=5245

Re: Grub problem after installing new Kernel

dummy@example.com (debian06) — Wed, 29 Mar 2023 11:52:15 +0000

Grub menu did not appear at all.
I got only this message:
error: symbol grub_disk_native_sectors not found

And grub prompt:
grub>

I failed to set root partition to any of the 3 partitions.
set root=(hd3,ext2)

Funny thing is that grub identified ext4 partition as ext2
it is where my /boot folder is located.

I think "apt upgrade" kernel spoils grub configuration.

Re: Grub problem after installing new Kernel

dummy@example.com (Marjorie) — Wed, 29 Mar 2023 11:12:48 +0000

Is grub failing completely?
Usually you can successfully boot into the previous kernel from the grub menu.

Grub problem after installing new Kernel

dummy@example.com (debian06) — Wed, 29 Mar 2023 10:40:15 +0000

Devuan machine gets un-bootable after installing new kernel with upgrade.
I get error at boot
"error: symbol grub_disk_native_sectors not found"

I could solve the problem with live CD and grub-install command.
Guide here:
https://phoenixnap.com/kb/grub-rescue
boot-repair software was not available in Devuan repos.

What is the cause of this problem?