Re: I think the real issue here was the EULA thing
Powering down the machine results in the NTFS file system being left in a state that cannot be repartitioned
ntfs-3g (the detault in many distros) certainly has a fsck command, which will get you out of that.
It's one of the tools[1] I carry on my bootable USB stick :-)
Vic.
[1] Along with chntpw and nwipe