Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Is there a Windows 7 native way to display the overall compression ratio on a Windows compressed drive?

As part of our disaster recovery process, we're copying some key system folders onto 2TB external hard drive, encrypted using TrueCrypt and copied using robocopy. The drive is compressed and I'd like to see what kind of compression ratio we're getting and whether it's actually worth the performance overhead.

I know that TreeSize can possibly do this (as mentioned in another post) but want a OS native way if possible.

Thanks, Rob.

share|improve this question
up vote 2 down vote accepted

The compact command is a native Windows command that displays or alters the compression state of files and directories.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.