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Windows 7: Backup Problem, Windows Reserves too Much Space, 800GB?

18 Apr 2011   #1

Windows 7 Enterprise
Backup Problem, Windows Reserves too Much Space, 800GB?

I’m using “Windows Backup and Restore” in Windows 7.
I'm using SpaceSniffer to evaluate a backup problem.
One of my scheduled backups failed. I thought this was because of lack of space. So I opened up SpaceSniffer and saw something surprising:
C, System Folder, 55.5 GB
D, Data Folder, 167.5 GB
I, My 1TB External Drive
_ 14GB used
_ 52GB free space
_ 864GB Unknown (not yet scanned)
I thought that the 864GB was “set aside” or used for the backups. But why is it so huge, when “C” and “D” are relatively small? That doesn’t make any sense.
What do you recommend I do?
Earlier problem resolved: A backup of my system files and my data files to my 1TB external drive did not succeed because “Scheduled backup of system images is not allowed on removable devices.”

My System SpecsSystem Spec
18 Apr 2011   #2

Windows 7 Home Premium 64bit

Odd, it should be allowed to backup to external devices. I backup my system all the time to a 500GB external Seagate :/
Is the external drive a standard data holding one or a specialist backup one?
My System SpecsSystem Spec

 Backup Problem, Windows Reserves too Much Space, 800GB?

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