[SOLVED] How to mount the disk after detach from the hardware setting?

[kaleaves]

Hi there

I am try a backup the VM OS without data for future restore therefore I also detached the second HDD which store data only on partition. But now how can I attach the HDD back to the VM?
Otherwise, may I have any advise to clone VM OS that can restore in other PVE machine?

Many thx
Kaleaves