New
#21
First step is to make F or G a little smaller... you decide which one. Actually it doens't matter which one.
Make it 200MB smaller.
Partition or Volume - Shrink
second step is make a new partition (200MB) in the unallocated space. Be sure it's primary and NTFS. And assign a drive letter
Partition or Volume - Create New
Now mark that partition as ACTIVE (so it is the boot partition if you try to boot from external disk)
Partition - Mark as Active
Now post screenshot of dsik management and post