I have an old iPod 4th generation 20gb Click Wheel that needs a new hard drive. I was wondering if I could replace it with a 30gb, or even a 40gb hard drive? Or are they slightly thicker and won't work in the 20gb body?
You can also get an IDE to CF adapter and put a compact flash card or SD card in it for even more space. I built one with a 64GB CF card in it, and it was super snappy.