How to fix qcow2 disk?

Question

Backup

Good afternoon. Hypervisor PROXMOX. There was a virtual machine with Windows Server 2003. After rebooting, windows does not boot, writes "boot failed not a bootable disk" Disk format qcow2. Tell me how to pull out the info or fix it?

Answer 1

If you need to mount a guest disk in qcow2 format, you can do it with qemu-nbd:

# qemu-nbd -c /dev/nbd0 /var/lib/vz/images/108/vm-108-disk-1.qcow2
# mount /dev/nbd0p1 /mnt/dest
# ls -la /mnt/dest

Unmount:

# umount /mnt/dest
# qemu-nbd -d /dev/ndb0

Answer 2

mount /dev/nbd0p1 /mnt/dest - I only have nbd0 and that's it