How come nobody answered you yet? Perfectly good question.
If you have a ZF rack, it is easier. That's the one where the boot's small end has a rubber disk about the size of a silver dollar (you have plenty of those right?). The tie rod is disconnected from the steering knuckle, and the new boot will slip right over the tie rod's ball joint.
If you have a CAM rack, there's no disk. The boot seals right down to the rod itself and won't fit over the tie rod end. That means you have to disconnect (unscrew) the tie rod end, so you have to be really sure to measure and mark its position if you want to avoid the alignment fee.
Getting the tie rod disconnected means you have to remove the nut and break loose a tapered cone joint. Easiest is with a tool for this purpose - a ball joint separator. Don't be tempted to use a pickle fork because it will damage the grease seal. Before I run for the tool, I try sharply smacking the eye of the steering knuckle on its end, and 2 times out of 3 the joint will just drop loose, saving me a trip to the tool chest.
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-K (hope springs eternal)
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