hdd took a sh*t!

[frequency]

hey guys, my hdd got messed up..it had an error message that said something along the lines of partion collision error..after i installed GT4 using winhip. and im pretty sure i have to reformat the hdd again from scratch again. so how do i do that sense the ps2 hdd is not recognized on my computer as an ordinary hdd, thereofre i cant right click and select reformat disk, any help is good help..haha. thanx!