- Launch a new Command Prompt (cmd)
- Type the command diskpart
- type list disk and note the number of the APFS formatted disk
- type select disk X where X is the number noted in step 3
- type clean. Now the drive doesn’t have partitions anymore, it’s just an unallocated space.
- Type
create partition primary
- To format type
format quick fs=ntfs
- Type
assign
letter=
X