You may view your hard drive in Disk Management and see unallocated space. The space will be on the hard drive, but Windows cannot use it. It is like having a spare room in your house but locked off.

Similar to CCleaner or Wise Care 365, Microsoft PC Manager can accelerate your PC's performance, declutter disk space, manage startup programs, control running processes, block pop-ups, and much more.

A Recovery Partition on Windows computers is a special partition that is used for System Recovery purposes. You can view the Recovery Partition in the Disk Management tool on your Windows computer.