Why would someone want to replace the iPod mini hard drive with a compact flash card? Well, why not? Compact flash cards are becoming readily available in larger and larger capacities (16GB iPod mini anyone?) and it requires much less battery power than a hard drive. If you have a large CF card laying around and want to revive that iPod mini, hit the link below and get modding.
turn your iPod mini into a flash based iPod [geek technique]