The legacy DOS partition layout is not supported with UEFI boot. This feature allows Citrix Hypervisor to be more easily installed on hosts where UEFI is the default boot mode. UEFI mode provides a rich set of standardized facilities to the bootloader and operating systems. Thin provisioned shared GFS2 block storageĬitrix Hypervisor Open Source Licensing and AttributionĬitrix Hypervisor supports booting hosts using the UEFI mode.