|Before doing anything so drastic as removing Vista, remember Windows 7 is only a beta OP system and expires on the 1st of Aug. at which time you will have no operating system. |
Even if Windows 7 was to be realeased by that time, which is doubtfull you can not upgrade from the beta version.
I have it installed on a seperate drive so I can't tell you what happens on a partition on the same drive.
However on my dual boot when I boot into Windows 7, the Vista drive is not visable, so if the same happens in your situation then you wouldn't be able to delete Vista. Further chances are the bootloader for Win 7 would be on the same partition as Vista, making it difficult if not impossible to remove, without trashing Win 7.
Best bet get a second hard drive for Win 7, they are very cheap now and extra storage is always usefull.