Author Topic: Why does Avast think my disk is fuller than it is ?  (Read 2544 times)

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dr29dr29

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Why does Avast think my disk is fuller than it is ?
« on: February 11, 2011, 05:24:58 PM »
I have just run a full system scan. 

The statistics at the end showed that Avast had tested 73.1 GB of data . . . . . but when I right-click on my hard-disk and look at it's properties - it shows only 65.2 GB of it as being used !

How is this possible ?  Where is the extra 7.9 GB of data that Avast thinks it has tested ?

I am using Windows XP and have only the one disk and it has only the one partition.

Thank you in advance.

David

Offline Gopher John

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Re: Why does Avast think my disk is fuller than it is ?
« Reply #1 on: February 11, 2011, 05:51:22 PM »
Avast is probably counting the data in compressed files/folders in the total.
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Offline MikeBCda

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Re: Why does Avast think my disk is fuller than it is ?
« Reply #2 on: February 11, 2011, 06:32:01 PM »
You'll probably find that number of files checked is (possibly considerably) greater than number of files on the drive, for the same reason
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Offline .: L' arc :.

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Re: Why does Avast think my disk is fuller than it is ?
« Reply #3 on: February 12, 2011, 01:06:18 PM »
When scanning files, avast! decompresses compressed files (i.e. zip archives) to check its contents. Since avast! decompresses a compressed file, the size of files scanned increases. :)
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Offline Eddy

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Re: Why does Avast think my disk is fuller than it is ?
« Reply #4 on: February 12, 2011, 01:20:26 PM »
You can't compare used disk size whith total file size(s).
They are two different things.