According to the officially announced hardware requirements, Windows 11 only supports booting from UEFI, which means that your system disk must be a GPT disk. So if you plan to upgrade from Windows 10 to Windows 11, you must ensure that your Windows system is located on the GPT disk.
Should I use MBR or GPT for Windows 11?
Windows 11 officially only supports GPT, so the answer is simple. Use GPT. MBR is considered legacy, outdated, and cannot (shouldn’t) be used anymore. Ubuntu supports GPT, just make sure you install Windows first (as @jimbo45 pointed out) then you can fix Ubuntu.
Can Windows 11 work with MBR?
As for the question, Windows 11 do run MBR but only as a 2nd disk. That means you can not have MBR as the primary disk for Windows 11. Unfortunately, Microsoft has set GPT (GUID Partition Table) configuration UEFI, and secure boot enables running and installing Windows 11.
Should I go for GPT or MBR?
As MBR is older, it’s usually paired with older Legacy BIOS systems, while GPT is found on newer UEFI systems. This means that MBR partitions have better software and hardware compatibility, though GPT is starting to catch up. We’ll take a brief look at both Legacy BIOS and UEFI a bit later in the article.
