[SOLVED] PVE 9 - GRUB stops the machine immediately

[fabian]

so you need to add an entry there for your ESP (/dev/nvme0n1p2) to mount it at /boot/efi .. and then you should reinstall your bootloader (apt install --reinstall grub-efi-amd64)

 

[Privacy]

Thank you!
But that sounds a bit different compared to the information on the help page:
https://pve.proxmox.com/pve-docs/chapter-sysadmin.html#sysboot_proxmox_boot_tool

Can you please explain that a bit more?

To setup an existing, unmounted ESP located on /dev/sda2 for inclusion in Proxmox VE’s kernel update synchronization mechanism, use the following:
# proxmox-boot-tool init /dev/sda2

So couldn't I just use # proxmox-boot-tool init /dev/nvme0n1p2 to setup my existing unmounted ESP?

I added

/dev/nvme0n1p2 /boot/efi vfat defaults 0 1

to /etc/fstab.

 

[Privacy]

So couldn't I just use # proxmox-boot-tool init /dev/nvme0n1p2 to setup my existing unmounted ESP?

I'll answer myself: yes, you can.

I did it, rebooted and it worked.

 

[fabian]

sure, you can also use proxmox-boot-tool to manage the ESP, but for your setup there is no advantage..

 

[Privacy]

sure, you can also use proxmox-boot-tool to manage the ESP, but for your setup there is no advantage..

I see. What would be an advantage over a system which is able to boot with no issues again?

 

[fabian]

with proxmox-boot-tool, all kernels and initrds are copied to the ESP - which means you are limited by the amount of space on the ESP, and can't keep all kernel versions bootable if you have many of them.

 

[Privacy]

Thanks a lot for the explanation.
Let's see if I can remember that in case I'll get space issues in future.
But for now I think I'm fine:

Filesystem             Size  Used Avail Use% Mounted on
/dev/nvme0n1p2        1022M  289M  734M  29% /boot/efi

An extra "Many thanks" for your ongoing assistance.

 

[thatgermandude]

Hey everyone, just wanted to chip in since I had the exact same Problem. Upgrade from 8 to 9 according to the official docs went smooth but then after a reboot I got stuck in a bootloop. It would just show "Welcome to grub" and then reboot.

Here is how I solved it:

I downloaded and booted from the official proxmox 9 iso and chose the rescue mode under advanced options.
After the System booted I could login through ssh. After reading the docs I tried to mount the efi partition first to check if the partition itself was ok:

root@pve:/# mount /dev/nvme0n1p2 /boot/efi
root@pve:/#
root@pve:/#
root@pve:/# ls -la /boot/efi/
total 12
drwxr-xr-x 3 root root 4096 Jan  1  1970 .
drwxr-xr-x 5 root root 4096 Sep 14 13:34 ..
drwxr-xr-x 4 root root 4096 Mar  8  2023 EFI

Then I just ran the grub commands:

root@pve:/# grub-install --target x86_64-efi --no-floppy --bootloader-id proxmox /dev/nvme0n1
Installing for x86_64-efi platform.
Installation finished. No error reported.
root@pve:/#
root@pve:/# grub-install --target x86_64-efi --no-floppy --bootloader-id proxmox --removable /dev/nvme0n1
Installing for x86_64-efi platform.
Installation finished. No error reported.
root@pve:/#
root@pve:/# update-initramfs -u -k all

The initramfs command would actually give me a few warnings about the removable bootloader and that grub would not update it.
But after a reboot everything was just working fine again.

Thanks for all your help

 

[glockmane]

In my case I did the following:

1) Boot with Proxmox ISO (Recovery Boot)
2) Shell:

mount /dev/sdX2 /boot/efi
grub-install --target x86_64-efi --no-floppy --bootloader-id proxmox /dev/sdX
grub-install --target x86_64-efi --no-floppy --bootloader-id proxmox --removable /dev/sdX
echo 'grub-efi-amd64 grub2/force_efi_extra_removable boolean true' | debconf-set-selections -v -u
apt install --reinstall grub-efi-amd64
update-initramfs -u -k all

Now boot works again!

Can somebody explain what the "--removable" option is for and why this line is needed?

Also can somebody explain the echo line? Proxmox suggested me to do that and reinstall grub afterwards..

 

[Labomba]

Hey everyone, just wanted to chip in since I had the exact same Problem. Upgrade from 8 to 9 according to the official docs went smooth but then after a reboot I got stuck in a bootloop. It would just show "Welcome to grub" and then reboot.

Here is how I solved it:

I downloaded and booted from the official proxmox 9 iso and chose the rescue mode under advanced options.
After the System booted I could login through ssh. After reading the docs I tried to mount the efi partition first to check if the partition itself was ok:

root@pve:/# mount /dev/nvme0n1p2 /boot/efi
root@pve:/#
root@pve:/#
root@pve:/# ls -la /boot/efi/
total 12
drwxr-xr-x 3 root root 4096 Jan  1  1970 .
drwxr-xr-x 5 root root 4096 Sep 14 13:34 ..
drwxr-xr-x 4 root root 4096 Mar  8  2023 EFI

Then I just ran the grub commands:

root@pve:/# grub-install --target x86_64-efi --no-floppy --bootloader-id proxmox /dev/nvme0n1
Installing for x86_64-efi platform.
Installation finished. No error reported.
root@pve:/#
root@pve:/# grub-install --target x86_64-efi --no-floppy --bootloader-id proxmox --removable /dev/nvme0n1
Installing for x86_64-efi platform.
Installation finished. No error reported.
root@pve:/#
root@pve:/# update-initramfs -u -k all

The initramfs command would actually give me a few warnings about the removable bootloader and that grub would not update it.
But after a reboot everything was just working fine again.

Thanks for all your help

Thanks man, did the same and it worked!

 

[ewsclass66]

Can confirm this also fixed the same issue for me.