OpenMediaVault disappeared from grub boot menu - unable to boot anymore

pepusik · Aug 14th 2024

I was using my OMV happily for about half a year. One day, one drive of my ZFS randomly disconnected (I am using USB enclosures) and was no longer recognized by OMV. Assuming the drive had died, I shut down the server and didn't work on it for a few days since I was really busy at that time. When I turned it back on later, the web interface didn't work—it seemed like OpenMediaVault didn't boot on my PC. When I connected a monitor to investigate, I was greeted with a memory test running. When I rebooted, the only thing showing in my GRUB menu was that memory test and nothing else.

I don't remember updating anything before the restart. I am using the Proxmox kernel.

I tried enabling OS-Prober, as some forum post suggested, using USB Debian in rescue mode — and I think I was successful, but it had no effect...

Secondly, I tried loading Super Grub2 Disk from USB to see whether it was an issue with the version of GRUB I had on my PC, but even that didn't help me.

The only interesting thing that came out of it was an error that occurred when I tried to print devices/partitions, which read:

error: disk 'hd0,msdos1' not found

Please help, this is starting to get really frustrating.

pepusik · Aug 14th 2024

Here are my RESULTS.txt from Boot Info Script:

pepusik · Aug 14th 2024

Here is additional information I found during later investigation . After using command update-grub in chroot this weird response shows up:

Code

Generating grub configuration file ...
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda2": No such device
Unknown device "/dev/sda5": No such device
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda2": No such device
Unknown device "/dev/sda5": No such device
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda2": No such device
Unknown device "/dev/sda5": No such device
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda2": No such device
Unknown device "/dev/sda5": No such device
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda2": No such device
Unknown device "/dev/sda5": No such device
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda2": No such device
Unknown device "/dev/sda5": No such device
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda2": No such device
Unknown device "/dev/sda5": No such device
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda1": No such device
Unknown device "/dev/sda2": No such device
Unknown device "/dev/sda5": No such device
Unknown device "/dev/sda1": No such device
/proc/devices: fopen failed: No such file or directory
Unknown device "/dev/sda1": No such device
Found memtest86+x64 image: /boot/memtest86+x64.bin
Warning: os-prober will be executed to detect other bootable partitions.
Its output will be used to detect bootable binaries on them and create new boot entries.
grep: /proc/mounts: No such file or directory
Cannot find list of partitions!  (Try mounting /sys.)
done

Display More

I don't understand how grub works at all, but I think it somehow can't recognize the partition in which my system is located. I use internal SSD as my system drive and i am pretty confident that /dev/sda1/ is the partition which hosts openmediavault. This gave me a little hope, since I have at least some hint to what is happening. If somebody reading this knows what could be the fix please help.

OpenMediaVault disappeared from grub boot menu - unable to boot anymore

ryecoaaron Aug 14th 2024

pepusik Aug 15th 2024

Participate now!