Since yesterday I've been trying to find out why I still can't shrink my partition more than it offers me.
I know my disk was fragmented so I ran a full defrag for a couple of hours and after defragmenting it, I could shrink it by 20GB. I've still got around 300GB free on the disk and it seemed to be defraged properly..
This is what I got after that:
Then after looking better, in the bottom right corner there are 4 'gray-ish' blocks that turn out to be "Unused Map Blocks". At least that's what Ultra Defrag map legend says. So my guess is that's what's preventing me from shrinking the disk any more, and I have absolutely no idea what to do about it.
I really need about 30GB more space as I am trying to dual-boot linux on that free space and would like ~50gb space for /home.
Thanks in advance!
EDIT: I did also run checkdisk etc. but no results :/