Creating Sandbox partition in new macbook pro
 

Just got a new MBP installed with Lion and getting ready to back up Lion on an external to put MLion on main HD.

I've been reading that I should be able to create a sandbox partition without erasing the main HD first, using the slider in disk utility...just checking to see if that's really ok.

Also I see that Lion is occupying about 15gb so I'm wondering if I should make the SBox partition around 25gb...?

I've been using SD for 7 years as a prosumer and it has been working flawlessly (maybe I don't know enough to mess stuff up) This is my 3rd copy and I'm so thankful to have it.

Yes, you should be able to do that.

You may want to try to create the Sandbox on a regular drive first, just to see how much space it's going to take.

Thanks for the kind words!

Well, I'm not worried about using up too much space - i'd rather allocate too much - so if I just doubled it - surely that would be enough or maybe did 35gb...?

Again, I have no idea how much space your Sandbox will take up. I'd really create it on a much too large partition to get a good idea.