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Windows 7: C Drive reports low disk space repeatedly

06 Jan 2011   #1
kaj

Windows 7
 
 
C Drive reports low disk space repeatedly

Over the last few days I have repeatedly received a "C Drive is low on disk space" message. The drive WAS a 150 GB partition of a 1TB drive. I increased the space to 160GB and instantly the disk filled up again. Any case a few days ago it was only a third full...
I have done disk clean up, defragged, run system file checker, run Malwarebytes (clean), glary utilities and also WinDirStat. This tells me that <Unknown files> are taking up 128GB of the space!! I have turned off hibernation and deleted the file for that. I have turned off acronis backup in case that's doing it. It has got to the point hwere I can't download CCCleaner because there's not enough room in the temp files I guess. I have on the C drive just Windows, a few apps installed in program files, but just about everything else is stored on other partitions - docs, music, tv, video, downloads, apps etc. Something is clearly writing massive amounts to the drive but I can't find out what because I can't open the <Unknown files> that WinDirStat reports - apparently I, or it, don't have access to them. Incidentally there are no System Restore Points - somehow that was turned off.
I've tried everything I can find on the forums. I really want to avoid a fresh install. I'm thinking of restoring my acronis backup but I'm unsure when this all started.
Can anybody help?




Attached Thumbnails
-drives.jpg  
My System SpecsSystem Spec
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06 Jan 2011   #2
richc46

Microsoft Community Contributor Award Recipient

Windows 10, Home Clean Install
 
 

Welcome
If not already tried run a full anti virus scan (be sure to update first)
Download and run a full scan with malwarebytes.
Did you update before running these two?
Hard Disk Space - Free Up and Recover
My System SpecsSystem Spec
06 Jan 2011   #3
kaj

Windows 7
 
 

Thanks for replying so quickly. I have run full anti virus scans with Malwarebytes and Microsoft Security Essentials. I'm quite fastidious about making sure everything is updated, Windows 7 itself too. Thanks for the link too; I have already worked through that list, which is why I'm getting really frustrated!
Any other suggestions?
My System SpecsSystem Spec
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06 Jan 2011   #4
Mike Connor

Several, including Windows 7 x64 Ultimate
 
 

Might help you....

Disktective, freeware disk-space reporting tool for Windows

<http://www.disktective.com/>

http://www.snapfiles.com/screenshots...vestigator.htm

<http://www.snapfiles.com/screenshots/diskinvestigator.htm>

Regards....Mike Connor
My System SpecsSystem Spec
07 Jan 2011   #5
kaj

Windows 7
 
 

Thanks Mike. Still the same this morning. I ran Disktective as you suggested. It doesn't seem to show anything that isn't quite bona fide, and doen't indicate that the drive is full from what I can see (screenshot attached -tried to generate report but html file refused to upload here- attached). However WinDirStat does report this (also attached). My problem now is, how can I find out what these unknown files are and get rid?
I did try Disk Investigator but Im afraid that's all greek to me!


Attached Thumbnails
-windirstat-jan-7.jpg   -disktective-jan-7.jpg  
My System SpecsSystem Spec
07 Jan 2011   #6
OldMX

Microsoft Windows 8.1 Professional
 
 

Disable System Restore and see if free space comes back?
My System SpecsSystem Spec
07 Jan 2011   #7
Mike Connor

Several, including Windows 7 x64 Ultimate
 
 

Hmmm....something is obviously generating the 128 GB of stuff.

Working with low level tools is always next to impossible if you don't know much about the stuff.

I would try this;

Best FREE Partition Manager Freeware for Windows 2000/XP/Vista/7 32 bit & 64 bit. EASEUS free Partition Manager Software Home Edition.

<http://www.partition-tool.com/personal.htm>

have a look at the disk with the tool and see what it says.

Make sure you have a backup first.

If ncessary delete the partition and reinitialise it.

Regards....Mike Connor
My System SpecsSystem Spec
07 Jan 2011   #8
kaj

Windows 7
 
 

Quote   Quote: Originally Posted by OldMX View Post
Disable System Restore and see if free space comes back?
May try tomorrow but I 've only just turned it back on - there's no space left on the drive for it to work.
My System SpecsSystem Spec
07 Jan 2011   #9
kaj

Windows 7
 
 

Quote   Quote: Originally Posted by Mike Connor View Post
Hmmm....something is obviously generating the 128 GB of stuff.

Working with low level tools is always next to impossible if you don't know much about the stuff.

I would try this;

Best FREE Partition Manager Freeware for Windows 2000/XP/Vista/7 32 bit & 64 bit. EASEUS free Partition Manager Software Home Edition.

<http://www.partition-tool.com/personal.htm>

have a look at the disk with the tool and see what it says.

Make sure you have a backup first.

If ncessary delete the partition and reinitialise it.

Regards....Mike Connor
Thanks again Mike. WinDirStat reports <unknown> has gone up to 136GB today!
Easeus just shows C Drive as full basically. I used it the day before yesterday to increase the c drive space by 10GB which was promptly filled.
Tomorrow I may restore an acronis backup & see if that gets rid, failing that a repair install.


Attached Thumbnails
-easeus-jan-8.png  
My System SpecsSystem Spec
09 Jan 2011   #10
kaj

Windows 7
 
 
C Drive filling up update

As an update, I restored my c drive partition from my acronis backup and the drive is back to its regular size. Of course the same thing may happen again, but if it does I'll actually reinstall.
As a matter of interest after the restore I was having problems with my graphics card driver, and realised the the card wasn't seated properly (probably happened when I changed the monitor last week) ; so whether that could have caused my problem I don't know.
Now all I have to deal with is "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)" on the UMBus Root Bus Enumerator in Device Manager. Always something sent to try us!
Thanks to both of you for trying to help me out.
My System SpecsSystem Spec
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 C Drive reports low disk space repeatedly




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