I'm trying to install Windows 7 in a QEMU VM, using virtio disk and networking. I'm starting setup via PXE, booting a WinPE image I created myself that has the virtio drivers, and I used NTLite to slipstream in the drivers to the Windows 7 install.wim. Installation proceeds smoothly until they very last step, just before first reboot and I get this:

Installation completes normally when using a SATA disk. I made no other changes besides adding drivers, not sure what went wrong.

Installation completes normally when using a SATA disk. I made no other changes besides adding drivers, not sure what went wrong.