To add a bigger SSD to my tablet from 64 to 256 I bought a new SSD. I thought the new one would replace the old one Drive C: so i cloned the original. Unknown to me , novice, it cloned my 256 SSD as 64. When i installed the new SSD it was assigned as Drive A: at 64. So I have 180-something unallocated.

How do i get rid of the 64 partition to make all the 256-ish available as drive A: I tried Formatting but it simple formats as 64.

Is there a way of "formatting" or whatever to get back the unallocated space.

It may simply be a case of terminology. I have MiniTool Partition Wizard installed.