Format and partition HD without external drive - how to...

Just got a new previous gen imac and before I start saving stuff, I want to partition the drive. I'm thinking this can be done with the install disc. I'm wanting to make a partition for a Superduper Sandbox, and a scratch disc for photoshop. Is there specific directions for doing this without an external drive anywhere?
I'm not sure how important it is to have a scratch disc as I'll have 3gb ram, and I'll leave a lot of free space....any thoughts on this?

You can do it from the install disk by booting from it then instead of doing an install select a language and then, go to the utility menu and select "Disk Utility". You can then create the partitions you want, name then, and decide the size of them. After that you will have to install a new OS. Remember that doing all of this will erase the drive, so if you have any data on it you want to keep you need to get it of first.
Mac Help can guide you through this process. You could also open up the Disk Utility application which is in your utilites folder and use those application specific help files. I am making this sound complicated but really, it is not.

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