I've been trying unsuccessfully to backup my system partition with Windows 7 on to my external hard drive (E using the Windows 7 Backup and Restore utility. Basically I run out of space because Windows 7 is flagging not only my C: partition as a system drive but also my E: drive for some reason. The E: drive only has data on it, mostly backups and drivers, etc, some 200 GBs worth. The Disk Management admin tool shows only the C: drive as the system drive and that it is active and the boot drive. There are no hidden boot files on the E: drive so I can't understand why Backup and Restore sees it as a system drive. System drives cannot be deselected as the box is greyed out. The only thing I can think that might be the cause of this is that I was dual-booting Vista on my C: drive and 7 RC on my E: drive prior to upgrading Vista to 7 and deleting all the RC files on the E: drive (which took some doing as the folders were locked). Normally I'd have formatted the E: drive but I have games also installed there and I didn't want to have to reinstall everything again, hence the reason I did an upgrade rather than a fresh install. Does anyone know how to fix this annoying issue?