Rose2005 wrote: ↑Thu Aug 27, 2026 6:50 am
Hi everyone,
I’m planning a V2V migration of several VMs and want to avoid discovering disk or boot issues only after the conversion has completed.
The current VM is about 480 GB, uses UEFI, has 3 virtual disks, and runs on ESXi 8.0. The target will be Hyper-V Gen 2.
Before starting the conversion, what checks do you recommend for:
disk integrity and unused space;
EFI/boot configuration;
partition alignment;
installed VMware Tools or drivers;
network adapter changes after migration?
For a VM of this size, would you perform any additional validation or create a test conversion first? I’m particularly interested in a practical pre-migration checklist that can reduce the risk of a successful conversion followed by a non-booting VM.
Thanks!
I’d definitely do a validation pass before starting a 480 GB V2V, especially since you’re moving from ESXi/UEFI to Hyper-V Gen 2. I’d first verify the guest OS disk health and filesystem, make sure there’s sufficient free space, and confirm the EFI system partition and boot configuration are healthy. I’d also check the partition layout/alignment and document the current disk order and network configuration before the conversion.
For VMware Tools, I’d note the installed version and any VMware-specific drivers/services so you know what needs to be removed or replaced after the move. On the Hyper-V side, expect the virtual NIC to appear as new hardware, so plan for the adapter/IP configuration to be reapplied.
With a VM that size, I’d strongly recommend doing a test conversion of a copy/snapshot first if your storage and downtime allow it. Boot the converted copy on Hyper-V, verify all three disks, services, networking and application functionality, then use the same procedure for the production VM. That test will usually reveal bootloader or driver issues much earlier than discovering them after the real migration.
