On the next screen, you're going to face a tough choice: How much disk space do you really need for each operating system? At any rate, make sure that 'Download the Windows support software for this Mac' is checked, which starts a download assistant that puts the Boot Camp 4.0 drivers on your desktop, on a separate USB drive or burns it onto a blank CD/DVD. If you'd rather install Windows using a USB thumb drive, read the steps below first and then move on. If you want to (or can) install Windows using your Setup-DVD, just pop it in and hit 'Continue'.

Macs without the Superdrive give you the additional choice of creating a bootable USB thumb drive from an ISO. Boot Camp 4.0, which includes all the necessary Windows drivers): On a Mac with an optical drive, the first dialogue box gives you the option to download the 'Windows support software' (i.e. So how does this work? First, start Mac OS X Lion and head over to Go/Utilities/Boot Camp Assistant. I'll describe these steps using Lion, though the procedure in Snow Leopard doesn't differ a lot (except for the fact that Windows XP and Vista won't work in Lion - yeah, Apple ditched 'legacy' support entirely with Boot Camp 4 and Lion). The first step requires you to shrink the Mac OS X volume and create a separate NTFS partition for Windows.

Step 1: Setting up your Boot Camp partition

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