Choose for modern UEFI systems, or MBR if you are targeting a much older legacy BIOS machine.
Users interested in trying out the latest features and improvements in Rufus can download Rufus 3.16 Beta 2 from the official website. Please note that beta versions may contain bugs or stability issues, so exercise caution when using them for critical tasks. Rufus 3.16 Beta 2 Download
Only download the beta from the official GitHub release page ( pbatard/rufus/releases ) or the official website archive. Choose for modern UEFI systems, or MBR if