Just did a fresh install of Windows 7 on my boot drive and left everything untouched on my data drive.
Straight away I ran into Window's accursed 'Read Only' issue where, because the files were created using another installation of windows, they aren't editable by my new user (or any programs like iTunes).
Taking ownership didn't seem to be working so I deleted the files and tried to format the disk (I've got everything backed up on a server anyway); but the format option was greyed out in Disk Management.
Being the fool that I am, I read the first part of a post in some forum where the same problem was being discussed, and jumped straight into doing the wrong thing.
In the end I deleted some critical system files on that particular drive (namely the boot manager) and now I can't boot to windows with that HDD connected.
I suspect that the recovery tools on the Windows disk may be able to help me out, but I don't want to jump straight to doing that without knowing exactly what's going on and how to fix it.
Can anyone shed some light on how to get this HDD working again? (It's a WD Green edition if that's any use).