Invalid fs on hd???

Hi,

I have been formating my hard drive today,and that is the message i get, when trying to load files from it!I have been switching it off,back on again,and still the same phrase.I can see the files i have got on it when i open it on the computer,but it seems that is blocked when i try to get access to it on the machine.Is it a hard drive matter,if yes,what kind of hardrive should i get?Thanks for replying!

I formated it on my computer,and i have been loading files into it after.I mean i have no problem opening it from my computer.It's only on the mpc,i can't load files,i have that "invalid fs" message.

Format in FAT32...........or in your MPC.

I have been reformating it again from my computer,but still can't open it from the mpc.I still get that window"invalid fs from hd"on the mpc screen.

Problem solved!!Didn't know that i could format it from the utility menu!That's what i did and it works fine now.Thanks for the replies guys!