Ubuntu
edk2 package

  1. Bug #1725560
  2. Comment #35

Comment 35 for bug 1725560

Revision history for this message
Laszlo Ersek (Red Hat) (lersek) wrote : Re: OVMF UEFI firmware causes Windows 10 w/ GPU passthrough to not boot after upgrade

OK, given that the edk2 commit in question is correct, I asked specifically for bug-compat ideas on edk2-devel:

http://<email address hidden>

I'll also try to ask IDE and Windows experts for help with figuring out what Windows is waiting for, when it's apparently doing nothing.

As a mid-term mitigation / work-around, I suggest using virtio-block or virtio-scsi for hard disks, and virtio-scsi for CD-ROMs. Windows (7, 8, and 10) can be perfectly well installed from a virtio-scsi CD-ROM to a virtio-scsi or virtio-blk hard disk, as long as the guest has *another* CD-ROM, using IDE or AHCI, and this CD-ROM presents the virtio-win ISO. The only thing the Windows installer *really* has to read from an IDE/AHCI CD-ROM is the virtio-scsi/virtio-block driver, all the rest can work with virtio.