Windows 8 System backup fails

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http://serverfault.com – Why is my backup failing with an error code indicating insufficient disk space (0x80780119) when I have more than sufficient space? Attempting to run a system-state backup of Windows 8 (via sdclt.exe) to a new (and newly NTFS-formatted) external 3TB drive. When the "Windows 7 File Recovery" application (yes, that's what it's called, even on Win8), I select the option to "Create a system image", select the external hard drive as the destination, select the drives I want backed up. After a few seconds, it fails saying: There is not enough disk space to create the volume shadow copy o (HowTos)