Disk usage C:/

sukhoi35 used Ask the Experts™
I see that my c:\ disk space used is 90 GB out of the 99.9 GB capacity as seen in Disk properties. I have done a disk cleanup, emptied recycle bin and emptied the contents of temp folder. When I add (sum) the hiddn folders and the unhidden folders'sizes in C drive like Program Files, Program Files(x86), Windows, Users, etc, it sums up to 65 GB only. So, how can I find where the remaining 30 GB is consumed. Any inputs / suggestions?
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Use Tree Size Pro (Jam Software) as top of class to organize and see your disk usage. Run as Administrator after you install it.

Are you doing backups to your disk?  This chews up space.

Also, 100 GB is really not enough for an OS install with software and data.
Top Expert 2016

Windirstat does the same thing but is free. It will tell you what files and folders are taking up the most space. You also have to take in to account your swap file and hibernation file.

Tree Size will find all the missing storage you're looking.
You can also delete the files in the software directly.
Sometimes, temporary folder stores most of the big files you have in the computer.
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Top Expert 2016

The key item that you have to do with any disk space program is run it as an administrator. this allows the program to access the entire drive not just the files that you have permissions to access.
Alan HendersonRetired marine engineer

Did you run Disk Cleanup as Administrator?

That allows you to remove additional system files (old install backups for instance) which often consume a lot of space.

Jackie Man IT Manager
Top Expert 2010


Have you removed system restore points also?

Windows 7
You cannot delete an individual restore point, but you can either delete all restore points or all but the most recent restore point. Deleting restore points temporarily frees up disk space. As new restore points are created, disk space will be used again. For information about how to adjust the disk space that is used by restore points, see How much disk space does System Restore require?

To delete all but the most recent restore point

Open Disk Cleanup by clicking the Start button Picture of the Start button. In the search box, type Disk Cleanup, and then, in the list of results, click Disk Cleanup.

If prompted, select the drive that you want to clean up, and then click OK.

In the Disk Cleanup for (drive letter) dialog box, click Clean up system files. Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation.

If prompted, select the drive that you want to clean up, and then click OK.

Click the More Options tab, under System Restore and Shadow Copies, click Clean up.

In the Disk Cleanup dialog box, click Delete.

Click Delete Files, and then click OK.

Source: http://windows.microsoft.com/en-hk/windows/delete-restore-point#1TC=windows-7

Do the above only if your system is stable and you do not need to have access to the previous versions of files saved in C drive.
Top Expert 2013

what os is this? it can simply be full - 90 Gb is not very much disk space...depending on installed software + data

you can also run a chkdsk to repair files ystem errors
MikeIT Professional

No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: John Hurst (https:#a41665837)

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