Help, I want to recover data from a QCOW2 file from a Proxmox VM

[smirandac1978]

HI i have the same problem. I have a 800 GB image qcow2 file, and I can't mount it to see the content.
I mounted the drive (Sata SSD) to /mnt/data so:

/dev/sda1 916G 101G 770G 12% /mnt/data

root@pve:/mnt/data/images/501# df -h
Filesystem            Size  Used Avail Use% Mounted on
udev                  3.8G     0  3.8G   0% /dev
tmpfs                 782M  2.4M  779M   1% /run
/dev/mapper/pve-root   98G  9.3G   84G  11% /
tmpfs                 3.9G   34M  3.8G   1% /dev/shm
efivarfs              320K   66K  250K  21% /sys/firmware/efi/efivars
tmpfs                 5.0M     0  5.0M   0% /run/lock
tmpfs                 1.0M     0  1.0M   0% /run/credentials/systemd-journald.service
/dev/nvme0n1p2       1022M  8.8M 1014M   1% /boot/efi
tmpfs                 3.9G   96M  3.8G   3% /tmp
/dev/fuse             128M   16K  128M   1% /etc/pve
tmpfs                 1.0M     0  1.0M   0% /run/credentials/getty@tty1.service
/dev/sda1             916G  101G  770G  12% /mnt/data
tmpfs                 782M  4.0K  782M   1% /run/user/0

I want to open that vm-501.qcow2 so I can recover the files I have there.
That was a Proxmox VM Openmediavult.

I reinstalled the proxmox server and now I can't recover that qcow2.

I follow the steps and I was able to attach the vm-501-disk-0.qcow2 to the new VM I created.
But when I start the VM, the VM doens't boot up.
The boot order I put it on hard disk first, but nothing happens.









Is there a way to make it boot? Or a way to recover the content of the qcow2 file?

Thanks.

 

[gfngfn256]

To mount a QCOW2 (partition/s) image in any Linux environment - you could search the general web for details.

Here is a pretty good result:
https://www.baeldung.com/linux/mount-qcow2-image

 

[pulipulichen]

Is there a way to make it boot? Or a way to recover the content of the qcow2 file?

Thanks.

Regarding the booting issue, if you added the hard disk to the VM after the initial creation, Proxmox usually does not include the new disk in the boot sequence by default. You should check the boot order settings:

1. Select your VM in the Proxmox web interface.
2. Go to the Options tab on the left side menu.
3. Find and double-click on Boot Order.
4. Ensure that the hard disk containing your OS is checked (enabled). You might also want to drag it to the top of the list to ensure it's the primary boot device.

If the VM still won't boot, a reliable way to recover the content is to attach this .qcow2 file as a secondary disk to another working VM (e.g., a Linux live ISO or an existing Ubuntu VM). This way, you can mount the partitions and browse the files directly without needing to boot from it.