How to convert win10 legacy boot to uefi+mbr boot non-destructively

Tools:

win10

Methods are as follows:

1, first open the DiskGenius 64-bit Professional Edition partitioning tool

2, create a new format for the main partition Fat16 or FAT32, the first to free up a piece of unused space, right-click on the C disk to resize

3.

3. Drag the arrow to resize a piece of extra space, and click Start

4. Right-click on the free area to create a new partition

5. Create a primary disk partition in the format of FAT16, and click OK.

6, click Save Changes

7, and then format this partition. It will automatically assign the disk letter?