- I presume I need to find my Vista install CD to be able to reinstall if goes pear-shaped?
Probably.
- Is it an "upgrade" on top of the Vista install? Or do you reformat and install a whole new OS?
Yes you can upgrade, but you cannot upgrade 32bit Vista to 64bit Win7, to do that you need to do a clean install, and vice versa.
- Is the hard-drive footprint much bigger? I'm already reaching the limits of my C Drive on the laptop cause I like to keep my music on there rather than external.
You need 16 gigs min for Win7, I did the upgrade from vista, not a clean install because I CBF reinstalling anything for something I'm going to wipe as soon as the production version comes out. For the record, it asked me to free up at least 10.5 gigs on C:\ for the upgrade.
- Is there an expiry date on the RC that eventually you have to pay to get the proper release of 7?
The RC will work till June 2010, but two months before this, will start shutting down every two hours, to force people to upgrade.
Considering it because laptop is relatively budge and looking for the performance improvements that supposedly come with 7.
From slashdot this morning:
http://www.itwire.com/content/view/24805/1231/