Dear Heroes, I've been working for a few days on this on one and off. It's weird. I have a disk image from a VMware Fusion 11.5 I ported into Parallels. Everything is the same, everything works, we're all good. No data loss, no issues with the image. Both hypervisors are running on the same machine, side-by-side. Under VMware I start a QEMU image on the Ubuntu host and it boots. No worries at all. Under Parallels the same QEMU image on the same Ubuntu host errors with this error: kernel trap 9 with interrupts disabled I've booted both images side by side and the only differences are the following: 1) Under Parallels, the QEMU node reports the following additional lines to the boot process WARNING: too long kenv string, ignoring module_path=/packages/sets/pending/boot/os-vmguest;/packages/a XSAVE Features=0x1<XSAVEOPT> 2) Under VMware Fusion, the QEMU node reports the addition of the MTF flag to the VT-x output. VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID These are the only differences. Any ideas?