I need to copy my KVM machine for further update. BUT our provider don't provide opportunity to copy a whole machine, just a hard drive. (virtio drive vda/vdb etc)
So, I made a new clean machine, attach old drive copy and now trying to replace main hard drive. Unfortunately, the provider also don't provide this function in iaas panel.
So - there is SeaBios and gPXE. I don't really understand how to use it and can't find any useful documentation.
Shall I try to switch booting hard drives using SeaBios? How?
Maybe my whole approach is definetely wrong? What shall I do instead?