I've done some preparations for installing the Beta 2 of Vista, including downloading the 4GB ISO file for the 64-bit edition.
You guys who are concerned about dual-booting need to go check out a product called VMWare (
linky). You can download a beta of their "Server" product, free of charge. There is a program to deliver light-use-class VMWare products free of charge on a semi-permanent basis, but I have yet to fully explore this.
Anyway, the "VM" in VMWare stands for Virtual Machine. So you install VMWare on your computer (there are Windows and Linux versions available), and you then create a virtual computer using your system's physical resources, into which you can install and run whatever you want. Including dodgy beta versions of operating systems. You can choose to make your machine's resources available, including RAM and disk, and you can choose whether to make other hardware available directly, sandboxed, or virtualised. You can also run more than one virtual computer simultaneously, so you can (if you have enough RAM) run an entire network virtually.
VMWare provide custom images of standard machines for you to use, but I haven't yet investigated this. And I do know that you can create an image of a VM, so that if you destroy it in some way you can just reload the image.
As I say, it's very much dependent upon how much memory you can have, but I would say that 1GB RAM is quite cheap compared to having to rebuild a computer just to repartition it, or because your dodgy beta OS has trashed it.
As a technology, it's totally awesome, especially for what we're talking about here. If I get really into it, what I might do is create a really basic Linux build on my computer, and then just choose my OS to run through VMWare. Of course, it's accelerating my desire for the second GB of RAM!
Oh, and I noted that MS state on the Vista download site that "you may not be able to upgrade from the beta product to the final version. A clean install may be required". Nice.
Anyway, once I have my VM set up, and have Vista installed in it, I'll let you know what I think.