There are three key reasons — all directly derived from your input:
🔹 Windows 11 requirement: Windows 11 mandates a GPT-partitioned system disk for installation and boot; MBR disks are not supported.
🔹 Larger storage support: GPT supports disks larger than 2 TB (unlike MBR’s 2-TB partition size limit), enabling full utilization of modern high-capacity drives.
🔹 UEFI compatibility & stability: GPT is designed for and required by UEFI firmware — which offers faster boot times, better hardware initialization, secure boot capabilities, and greater overall system reliability compared to legacy BIOS/MBR.
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