Hidden space

May 11, 2009 at 01:03:17
Specs: Windows XP
My c drive partition is about 9 gb.when i selected all the programs on c drive and click properties it shows 3.12 gb occupied.But when i see the properties on c drive it shows me occupied space upto 6.39 gb and available space 1.40 gb.Thats means it has about 3 gb of space hidden.I have tried everything neither my hdd contain any duplicate or ghost.Please help me..

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May 11, 2009 at 03:23:36
The is a hidden folder named "System Volume Information".
This folder is used for System restore points from the "System Shadow Copy" service.
This folder is often the reason for the shown difference in size by 1. checking the size of selected folders and the drive informations itself.

Please send a reply, if you solved the problem !!!

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May 11, 2009 at 04:05:34
When you do the disc properties it shows the usage from all files and folders with system root files and system restore files. and allocated cluster size.

When you do the file/program properties it shows only the actual size of the files and programs. It does not show system root and also system restore files....These are kept hidden to protect the files from accidental corruption.

About the allocated cluster size.. files are stored in data blocks or clusters. The size of these clusters is determined at formatting and what operating system is being used.
Each file is given a full allocation of clusters to write the data to, although the file may not require or use the full cluster size it is dedicated to that file. This is what you see in the disc properties of the drive....all the allocated clusters (used and unused space per cluster) for each file.
what you see in the all programs and files/folders select properties is the actual file/folder size less the dedicated cluster allocations

Think of each cluster as 10 blocks of available storage space. You create a file that uses only 8 blocks. The 8 blocks is the actual size the file is report to be....but when viewing as allocated disc space the file is shown to be 10 blocks in size.

This seems wasteful but actually allows for faster retrieval of the stored data because the search takes less time looking for the file....

Change Is Good

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May 11, 2009 at 04:53:14
Excellent answers above. In addition to those, you may simply need to empty the recycle bin. If the hard drive is formatted using FAT32 there may be more overhead. Your swap file may be set manually to a large size.

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May 11, 2009 at 09:17:44
Thank you.But i found the way to do it.Go to advanced settings in my computer where you will get the exact problem..
Anyway thank you very much for your cooperation.

Thanks once again..

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May 11, 2009 at 10:20:46
the system restore is the "problem"

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