The process is straightforward and typically takes only a few clicks: Select the Disk DiskGenius and locate the target MBR disk in the left pane. Choose Conversion : Right-click the disk and select "Convert To GUID Partition Table" from the context menu. Confirm and Save : Click the "Save All" button on the toolbar and confirm with to commit the changes to the disk. DiskGenius Technical Requirements and Limitations Free Space

Unlike some Windows commands that happen instantly, DiskGenius works in a "Preview mode." After you click the menu option, nothing has actually changed yet.

: The disk must have a small amount of free space (typically dozens of sectors) at both ends of the disk to store the GPT headers. System Firmware Support

offers a superior solution for the average user:

A: Only if you plan to install Windows 11 or dual-boot with Linux. For a small drive, the performance difference is negligible.

: A warning may appear reminding you to check for UEFI compatibility. Click "OK" or "Yes" .

If you just converted your (C:), your computer will not boot until you tweak the BIOS settings.

Although DiskGenius is designed to convert without data loss, working with disk partition tables always carries a risk. Power failures, software conflicts, or hardware instability during the process could result in corruption. Therefore, follow these precautions:

diskgenius mbr to gpt