Importing vms from old cluster

[Probaholic1]

So I had an issue with an old machine where I had to pull the Hard drive and install it on another machine. Tried to boot proxmox and it wouldn't boot. So I figured I would install pve 6.0 on the a thumb drive (16gigs) and figured I'd be able to import the old configs files. Except I'm not able to do that. I can see the vms under /dev/mapper and under /dev/pve-old and the hard drive shows up in storage on the new PVE as /dev/sda3, but I can't seem to figure it out. I thought I would be able to a qm importdisk from /dev/pve-old/<vm> but it either tells me there's no VMID or the file is nonexistent if I try to create a similar VM name.

But since I can't seem to find the config files for the old vms, I'm kinda lost.
Any help would be appreciated.

Thanks.

 

[Alwin]

This sounds like to grub may be having an issue. What is the output when you try to boot?

The /etc/pve directory is a mapped sqlite DB, located at /var/lib/pve-cluster/config.db. That's why you don't see the original DB.

 

[Probaholic1]

When I remove the USB thumb drive that I have proxmox installed on. I reboot and gives me
Error 1962: no operating found. Boot sequence will automatically repeat.
and when I reboot with the USB stick it detects the old pve LVMs on boot up that are in /dev/mapper I would get

 

[Alwin]

It seems that either the disk is not selected for boot (BIOS) or the bootloader is missing. The latter would need a recovery bei re-creating grub. This could be done with any bootable linux.
https://pve.proxmox.com/wiki/Recover_From_Grub_Failure