When I updated last time my BIOS Firmware, it was been from here: https://downloadcenter.intel.com/download/23908/Intel-Server-Board-S5520HC-S5500HCV-S5520HCT-and-Intel-Workstation-Board-S5520SC-Firmware-Update-Package-for-EFI?product=36599
"S5520HC S5500HCV S5520HCT S5520SC BIOS Recovery Package for EFI" Maybe this is the problem, that my bios in some reason could working always with EFI mode even if I change it on 'Disable' in bios menu? -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/c0fef8c5-a3a5-475a-8b33-85f43800b400%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.