Edit Boot Options to activate or deactivate UEFI Secure Boot and configure the boot behavior of the virtual machine. What to read next Activate or Deactivate UEFI Secure Boot for a Virtual MachineUEFI Secure Boot is a security standard that helps ensure that your PC boots using only software that is trusted by the PC manufacturer. For certain virtual machine hardware versions and operating systems, you can activate secure boot just as you can for a physical machine. Delay the Boot SequenceDelaying the boot operation is useful when you change BIOS or EFI settings such as the boot order. For example, you can change the BIOS or EFI settings to force a virtual machine to boot from a CD-ROM. Parent topic: Configuring Virtual Machine Options