device: 0.784 boot: 0.429 graphic: 0.386 vnc: 0.194 other: 0.192 semantic: 0.153 mistranslation: 0.123 instruction: 0.087 socket: 0.003 KVM: 0.002 assembly: 0.001 network: 0.001 Regression report: Disk subsystem I/O failures/issues surfacing in DOS/early Windows [two separate issues: one bisected, one root-caused]