If you plan to upgrade to Windows 11, and you enable Secure Boot, the computer won’t probably start anymore because the hard drive is using the MBR (Master Boot Record) partition table instead of the GPT (GUID Partition Table), which is a requirement to use Windows in UEFI (Unified Extensible Firmware Interface) mode …
Can I use MBR with UEFI?
If you want to boot into UEFI BIOS using your current MBR-partitioned HDD, you’d need to reformat it to GPT. Otherwise, you’re stuck with booting only into Legacy BIOS.
Is MBR compatible with BIOS?
However, in principle it is possible to configure a system with BIOS firmware to boot using a GPT disk, and vice versa. MBR disks are primarily BIOS booted, as a result BIOS firmware and MBR disks are linked and much like BIOS, MBR also has several limitations.
Does UEFI use GPT or MBR?
To boot your PC in UEFI mode, you’ll need to use a drive formatted using the GPT drive format. Many PCs are ready to use UEFI, but include a compatibility support module (CSM) that is set up to use the legacy version of BIOS.
Can Windows boot from MBR?
Of course, you can. Windows 10 uses both GPT and MBR disks. Windows 10 can be installed on both MBR and GPT, depending on the firmware of your computer. If your computer has BIOS firmware, you can only install Windows 10 on an MBR disk.
