Migrate a Hyper-V VM to Proxmox

• Copy HyperV VHDX files to Proxmox host. /root will do
• Create your VM in Proxmox with no disks to start with
• Next have qemu-img check the VHDX file for any corruption by running this command...

qemu-img check -r all '/root/vmname-data.vhdx'

• If all ok, import the disk using this command...

qm disk import 109 /root/vmname-data.vhdx local-zfs --format raw

• 109 is the VM ID
• /root/vmname-data.vhdx is the file path of your vhdx file
• local-zfs is the name of the storage pool you want to put the disk image on
• --format raw specifies the disk image file type you want. If using ZFS to store your disk image use raw. If using EXT4 then use qcow2

You then just need to go into the VM's Hardware tab and attach the disk to the VM by double clicking it