What is a population 50 GB on my hard drive?

I bought a 'netbook' in addition to my main computer, and it was an opportunity to review everything. The main machine has a 300 GB hard drive. I did a 'properties' on the C drive (the drive is not partitioned) and he said that I use GB 133. But when I went the subdirectories and added everything up, the total was about 80GB. What is in another 50 GB?

I did a disk cleanup and defragmentation. I realize that the 'invisible' Go 50 won't get out me of the crowd, but I wonder what is happening with it.

Hello

Read this information including the system restore using 15% hard drive space

see if this program helps you to determine what is take up space

http://www.Jam-software.com/treesize_personal/

by default system restore will have up to 15% of the capacity of the hard disk

you would like to reduce this amount

http://www.Vistax64.com/tutorials/76227-system-restore-disk-space.html

http://www.vista4beginners.com/system-restore-space-used

also use disk cleanup

http://Windows.Microsoft.com/en-us/Windows-Vista/delete-files-using-disk-cleanup

The other Options tab is available when you choose to clean up the files of all users on the computer. This tab includes two additional ways to free disk space even more:

  • Programs and features. Open programs and features in Control Panel, where you can uninstall programs you no longer use. The column size in programs and features shows how much disk space each program uses.

  • System Restore and shadow copies. Guests delete you all but the most recent restore point on the disc.

also scan for malware

Download update and scan with the free version of malwarebytes anti-malware

http://www.Malwarebytes.org/MBAM.php

and read these information from microsoft on windows optimization

http://Windows.Microsoft.com/en-us/Windows-Vista/optimize-Windows-Vista-for-better-performance

Tags: Windows

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