Running out of space on the ol' iPod?

Upgrades! :

2. Press and hold the following combination of buttons
simultaneously for approximately 10 seconds to reset the iPod.
* iPod 1G to 3G: "Menu" and "Play/Pause"
* iPod 4G+ (includes Photo, Nano, Video, and Mini):
"Menu" and "Select"
3. The Apple logo will appear and you should feel the hard drive spinning up. Press and hold the following sequence of buttons:
* iPod 1G to 3G: "REW", "FFW" and "Select"
* iPod 4G+ (includes Photo, Nano, Video, and Mini):
"Back" and "Select"
You will hear an audible chirp sound (3G models and higher) and the Apple logo should appear backwards. You are now in Diagnostic Mode.
4. Navigate the list of tests using "REW" and "FFW". The scroll wheel will not function while in diagnostic mode.