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Windows 7: SpaceSniffer shows 94GB of unaccessable space

13 Feb 2015   #1

Windows 7 Home Premium 64 bit
SpaceSniffer shows 94GB of unaccessable space

Hi. I recently noticed that my C: said I only had 42 GB free. Running WinDirStat shows that I am only using about 150 GB of data, though it does only show 42 GB free, rather than 150 GB free (i.e. about 100 GB is 'missing').

I then ran SpaceSniffer which also shows that i'm using about 150 GB of data but, it also shows 94.5 GB of 'unaccessible space'.

I further see that spacesniffer says the C: is using 156 GB, but 251 GB 'on disk' (a difference of 94.5 GB).

Any thoughts as to why there's 94.5 GB of missing/unaccessible space?

Thank you!

p.s. I'm running Win 7 home premium on an Asus laptop

Attached Thumbnails
SpaceSniffer shows 94GB of unaccessable space-computer.jpg   SpaceSniffer shows 94GB of unaccessable space-c-windirstat.jpg  
Attached Images
SpaceSniffer shows 94GB of unaccessable space-windirstat-select-drives.jpg 
My System SpecsSystem Spec
13 Feb 2015   #2

Windows 7 Home Premium 64 bit

forgot to include spacesniffer screenshot

Attached Images
SpaceSniffer shows 94GB of unaccessable space-spacesniffer.jpg 
My System SpecsSystem Spec
14 Feb 2015   #3

Windows 7 Ultimate x64

Think maybe space sniffer cant snif that space something about privileges, so it has no access?

Your screen shots show the partitions as healthy.
My System SpecsSystem Spec


 SpaceSniffer shows 94GB of unaccessable space

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