Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Setting up a Linux distribution isn't a difficult task anymore, but if you want to install Linux on a machine that already has a Windows installation on it, you'll have to slice your disk into smaller partitions to do so.
As fun as it would be, it's not possible to do it Kill Bill-style, either; we need to follow some slightly subtler steps to get everything ready for your new distro.
1. Defrag 'em
Before you can partition your disk, you have to make sure that all of your data is neatly packed together. Operating systems can't always store all bits of a file contiguously, so they're often scattered all over the place.
When you defrag a disk, you reduce this fragmentation and align the blocks of data on the disk contiguously. The good news is that defragging your disk is much simpler than its explanation.