Unknown disk space

The 46GB is one read-only file ($AVG8.VAULT$), it is not the space taken up by all the files.

If you want to know where all your space is, download TreeSizePro http://www.jam-software.com/freeware/index.shtml, it should give you a breakdown.

Could you please show the disk map of Windows Disk Management too? Please widen the screen of WDM and take another screen shot.

That is not the AVG vault - If it was, it has 128,174 infected files (21,464 infected folders) using 46 GB of space.  Sorry, but not possible.  I think the numbers go like this -
  222.65 GB total space c:
 (146.30) GB free
--------
   76.35 used
( 46.60) - your screenshot #
 ----------
 29.75 GB space "missing"
=========
29.75 / 222.65 GB (size of c:) = 13.16 %
13.36 % / upto ~33.45 GB dead-on for the % of HDD space used by VSS/ System Restore

Up to ~ 33.45 GB will be used by system restore on drive c:
You can check this out for yourself -
Download the attached zip file and extract the batch script file to your desktop.  Go to desktop, RIGHT-click on the batch file & select "Run as Admin".  The cmd/DOS screen will appear briefly followed by a notepad with your system's VSS/ system restore info.
Regards. . .
jcgriff2
.
 
 

 



vss-jcgriff2-.com.zip

You'll have to rename it once on the desktop - change the  .TXT  to .bat  as the file ext

You'll have to explain why the C drive has the Read-only box highlighted.  There should not be any reason the boot drive is set that way.  There may be something wrong with the drive, but saying "not possible" is a stretch.  Perhaps the asker should clarify it for us and tell us how he got that window?

I agree - where did that window come from?  The screenshot looked "XP-ish" to me with its non-Aero edges and colors.
The "read-only" box will be blue if there is just one file in a folder beneath it that is read-only.  

Dear Callendor,

The 46 GB is for all the C drive, but by default it will take the first folder and if you see the location is all in C;\.

Dear jcgriff2,

Did you mean the system restore used by the Laptop. If yes, it is seperated (10.24GB). The OS is Vista.

Hi -
My 1st objection.
The original ques by OP -
The disk size on the C drive is 46.4GB (including the hidden file). After checking the disk management, I found that the disk space is 76.35GB. I want to know where it is the 29.95GB?
Please find the below attach.
I think that my detailed auditing analysis of the drive space in 24876162 proves that no space was missing and is the solution.  I accounted for 29.75 GB out of the original  29.95 GB "missing" space which = 20 MB  variance (0.7 %  - less than marginal given rounding)
I believe that to be the solution.  As to the reason no follow-up by OP - I can't answer that one.
Thank you for your consideration of this...
jcgriff2

Hi - Apologies.  I hit "SUBMIT" instead of "OBJECT" in the above 25102527
Please delete or copy in the other much-more-nicely-formatted post.
Thank you.  JC
 
Hi -
My 1st objection.
The original ques by OP -
The disk size on the C drive is 46.4GB (including the hidden file). After checking the disk management, I found that the disk space is 76.35GB. I want to know where it is the 29.95GB?
Please find the below attach.
I think that my detailed auditing analysis of the drive space in 24876162 proves that no space was missing and is the solution.  I accounted for 29.75 GB out of the original  29.95 GB "missing" space which = 20 MB  variance (0.7 %  - less than marginal given rounding)
I believe that to be the solution.  As to the reason no follow-up by OP - I can't answer that one.
Thank you for your consideration of this...
jcgriff2