What happens when you compress a drive to save disk space?
When you load a compressed file, the CPU has to do more work decompressing it.
However, that compressed file is smaller on the disk, so your computer can load the compressed data from disk faster.
On a computer with a fast CPU but a slow hard drive, reading a compressed file might actually be faster..
How do I free up space on my C drive?
To access it, right-click one of your hard drives in the Computer window and select Properties. (Alternatively you can just search for Disk Cleanup in the Start Menu.) Click the Disk Cleanup button in the disk properties window. Select the types of files you want to delete and click OK.
How long does it take to compress C drive?
The compression process might take from 5 minutes to an hour, depending on how many files and subfolders there are.
Should you compress C drive to save space?
A Golden Rule! Never compress the C drive or System Drive. System drive compression could cause a lot of problems including causing driver installations to fail. And even if you still do decide to compress the system drive – DO NOT compress the root directory, and DO NOT compress the Windows directory.