Migrating vmware Win10 vm fails to boot past the UEFI shell


New Member
Jan 15, 2022
Thanks in advance for any help - a few hours of searching in and no luck so far...

I'm migrating my home lab from VmWare to Proxmox. I have a single PVE node set up and working (7.1-8) and have successfully migrated linux vms with no problems. I have a Win10 VM which I have migrated using the instructions here but I'm not able to get it to boot.

Using msinfo32.exe I can see that the Win10 vm is using Legacy Bios
I have removed all snapshots
I have removed VM guest tools
I've exported a template successfully
I've imported and created a new vm using the qm importovf command
I've tried using both uefi and SeaBIOS
Using UEFI - the machine drops to the EFI shell
-- Ive tried adding an EFI disk as was recommended by several posts to store system settings but this produced no change in behaviour

Using SeaBIOS I get a pale blue windows logo (is this the M$ boot loader?) which eventually fails with a "no bootable media" message. I can access various Windows troubleshooting tools with no success to date.

Many thanks for any guidance on next steps.

Here's the current 203.conf file:

bios: ovmf
cores: 4
efidisk0: pvestore:203/vm-203-disk-3.qcow2,efitype=4m,pre-enrolled-keys=1,size=528K
memory: 8192
name: Veeam1
sata0: pvestore:203/vm-203-disk-0.raw
sata1: pvestore:203/vm-203-disk-1.raw
smbios1: uuid=db0be929-3a5d-42a3-971c-3f6fea5301a1
vmgenid: b9f66b43-40e3-4e87-a0a1-3f8e10c44b2a


New Member
Jan 15, 2022
I seem to have finally got it up and going. So if its useful to any one else:
- In the 'Hardware' section of the VM I selected SeaBIOS
- I removed both hard discs (SATA mounts) and remounted them as IDE
- Selected Windows in the 'Options' section
and rebooted.

Now for optimization...


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