**Necessary conditions for SafeUTM work:** 1. UEFI support. 2. Legacy download mode must be turned off (it may also be called CSM - Compatibility Support Module). 3. Turn off Secure Boot in UEFI.
SafeUTM supports the following hypervisors: - VMware (Workstation and ESXi) versions 6.5.0 and higher; - Microsoft Hyper-V (2nd generation); - VirtualBox; - KVM; - Citrix XenServer. In order to work on virtual machines, there is no need to install additional drivers or utilities on SafeUTM. Guest add-ons are included in the distribution package. --- #### General Recommendations - OS type to create a virtual machine: Linux Fedora, 64-bit; - Minimum hard drive capacity - 64 Gb; - Hard drive dynamic expansion is not automated but possible upon contacting technical support; - Minimum memory size - 8 Gb; - An internal VM clock must be set up for keeping time in the UTC time zone.If during the installation of SafeUTM an error **"At least 8 GB of RAM is required"** appears on the screen, and you specified the recommended amount of RAM, then reduce the size of the resources allocated for video memory to the minimum.
--- #### Microsoft Hyper-V Only the 2nd generation VMs for Windows Server 2012 R2 or higher are supported. It is necessary to turn off Secure Boot. Always use a regular virtual network adapter. --- #### VMware ESXi Before SafeUTM installation it is necessary to increase video memory for the virtual machine to 16 Mb (the default is 4 Mb). **Vmxnet3** virtual network adapters are recommended for use. --- #### Citrix XenServer In case XenServer cannot be downloaded from an ISO file, follow these steps: 1. Run command `xe vm-list`. This command will show the list of virtual machines on XenServer. 2. Select a virtual machine with UTM and memorize its UUID. 3. Run command `xe vm-param-set uuid=If there is no **UEFI x86\_64:/usr/share/OVMF/OVMF\_CODE.fd** on the list, you need to install ovmf package. In Ubuntu, this package is installed with the command **sudo apt install ovmf**.