VMX file or by using a third-party tool like VM Tweaker. UEFI support must be enabled by manually editing the. Furthermore, the VMware products do not provide an option in the GUI for enabling UEFI. The virtual machine products offered by VMware support UEFI, but BIOS firmware is enabled by default. Let’s take a closer look at how to enable UEFI on specific VM platforms. Just like with modern computers, you can temporarily switch back to BIOS firmware - for instance, to load a live bootable operating system that doesn’t support UEFI. You need to enable UEFI and then install an operating system with UEFI. That will cause the operating system to fail to boot. However, keep in mind that you can’t switch a virtual machine with an installed operating system from BIOS firmware to UEFI.

Today we’ll discuss UEFI support of the popular virtual machine (VM) platforms and how to enable UEFI for your virtual machines. Although UEFI isn’t supported by all operating systems, it is becoming more and more popular. Due to Microsoft’s requirement of Unified Extensible Firmware Interface (UEFI) instead of BIOS firmware for computers certified for Windows 8 and later, UEFI is now supported in nearly all new computers.

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