Install Tiger from an iPod

Mac OS X Hints has a new hint up today that shows you how to make your iPod a bootable Tiger install disk. This involves erasing your entire iPod, so you'll probably want to make sure you have backups of all the music crammed in there.

After you've erased the iPod, it is really a simple matter of using Disk Utility (located in /Applications/Utilities/) to an image of the Tiger DVD on your iPod. Cool little tip for the DVD-less Mac users among you. It should work with any iPod save the iPod shuffle (which doesn't have enough room). It's not necessarily iPod-specific either. Any bootable external drive will do.