Upgrading to 10.5 Leopard: Best Approach?

[badlydrawnboy]

Dave,

I'm in the same boat, although I have a bit more flexibility because I have four drives - two internal, and two external. Current config is Sandbox on a 74 GB Raptor boot drive, HD on internal 750 GB drive. Back-up on 400 GB external FW drive, and another 400 GB external FW that has an extra back-up of my images.

I was wondering if it's possible to install 10.5 on the Sandbox to try it out, but after thinking about it more and reading your reply it doesn't sound like a good idea.

I guess I'd be better off zeroing my internal 750 GB, doing a clean install of 10.5 there, and migrating my apps & files from the SuperDuper clone of my current system on the external FW. The only problem with this is that I get very nervous only having one copy of my system/files, and that's where I'd be when I erase the internal 750 prior to installing 10.5. Guess I could risk it, or pick up yet another external FW drive.