Question "Used space" remains after wiping hard drive

Netherspark

Reputable
Feb 11, 2016
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4,640
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After wiping my hard drive in CCleaner there was initially still 230MB of "used space", which has now increased to over 300MB, even though there's literally nothing on the drive. SpaceSniffer shows it as "Unaccessible Space", and the CCleaner analysis tool just calls it "Other Files". I cannot see anything on the drive at all.

I've wiped the disk clean, formatted it, deleted the volumes. Nothing I do gets rid of it.

What's going on with this?
 

DeauteratedDog

Honorable
Dec 11, 2013
583
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11,240
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It looks like CCleaner only erases files, not the entire disk.

Grab DBAN or something similar that will flatten everything - boot records, partition tables, etc.

You don't need the multi-pass options, just one pass will be enough unless you are selling or giving away the drive.
 

Netherspark

Reputable
Feb 11, 2016
79
0
4,640
1
It looks like CCleaner only erases files, not the entire disk.

Grab DBAN or something similar that will flatten everything - boot records, partition tables, etc.

You don't need the multi-pass options, just one pass will be enough unless you are selling or giving away the drive.
I couldn't get DBAN to work, it just refused to run. I tried DiskWipe instead and made no difference.
 

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