Hi,
I used Clonezilla for clone my 500gb proxmox raid (2 disks, zfs) on 2 1TB ssd disks.
None of the disks boot.
Loading one of the disk in a usb to another linux system with zfs utilities installed, i can see 3 partitions:
sda1
type BIOS boot
content unknown
size 1MB
sda2
type ZFS
content...