Less space after running Defrag

On a 244 GB disk I had 20% available disk space when starting defragmenter. After running for like 24hours (only came to 20%) the disk space was reduced to 16%. I then turned stopped the defragmenter since I have read at least 15% disk space befor running.

I also did the defragmenter 10 days ago on the same server but not with theese results.

Any Ideas?
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Click on the drive in My Computer, select properties > Disk Cleanup > check all > OK to clean ... try see if you can gain more space.
dunkapunkAuthor Commented:
Is this safe to do on a file server?
Is the drive you taking the boot drive on server? if so, please see the link:

I'd run Disk Cleanup and Defrag in safemode, as well as removing whatever else you can on that box.

use tree size professional software or try its free version see where all the space is going.. it will show you clear picture of your folder sizes really really good software

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Microsoft Server OS

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