You can partition C drive in Windows 11/10 without formatting using Shrink Volume or Diskpart command line & create a new partition out of it. Learn the procedure here.

If you don't want all your files in one place, but only have a single hard drive to work with, never fear -- you can just partition it! Here's how.

Acharya1987’s C: drive is running out of space. I offer my suggestions, as does the Answer Line forum. I’m going to concentrate here on recovering disc space in Windows and your applications ...