Solved free software which will shrink system partition?

On a hdd the windows 8.1 64bit home system partition c is 450gb. I want to shrink the partition to
about 100gb. Disk management cannot do that.
Is there free software which will shrink the partition to about 100gb?
Thank you.

Disk Management should be able to shrink it no problem but if you Google free partition software there is lots to choose from all very good. Why can't you do it with disk Management?

Thank you.

Why can't you do it with disk Management?

Click to expand...

control panel -> system and security -> administrative tools -> computer management -> disk management.
Right click windows 8 os c.
Shrink volume.
Shrink c window says, you cannot shrink partition c to a size smaller than about 200gb. Maybe because of unmovable files.

Can I shrink to 200gb. Then shrink again in order to get an about 100gb windows system partition c?

Google free partition software

Click to expand...

I would prefer software which people have tested.

Paragon Partition Manager 14 Free Edition - Overview is very good the most popular used on the forum are minitool

Thanks. I used gparted. Then reinstalled the system.