usb portable hard drive not recognized



i recently recevied a 'phillips usb 2.0 200gig portable storage drive.
i managed to get it be recognised by my ibook g4 once and so i reformatted it for mac.
now when i try to plug it in nothing happens and it isnt tilitfound when i try disk utility.
The funny thing is. when i plug it into my sisters macbook pro it is instantly found, mounted on the desktop and works as it should - what am i doing wrong?


Chmod 760
Staff member
Do you see it in system profiler? (from apple in upper left corner > about this Mac > more info...)
Maybe it's not getting enough power. Do you have an external power for it, and does that happen in all USB ports?