Hi, before I began my tale of woe, let me tell you what system i have ... I'm running on OS 10.4.6 on a 1gz Powerbook G4 15" Aluminum model. I had a spare 5.25" 30 gb Maxtor UATA HD, so i bought a no name USB 2.0 enclosure (200gb max) and stuck the maxtor in there as an external... all good right? sure it works like charm. I bought a Western Digital 160 gb harddrive and stuck it to the same enclosure and no matter what i do i t wont mount on my powerbook... the read/writing and power light are both lit but not mounting occurs... anyone with any advice? I check some mac message boards, and it seems like mounting WD disks is tricky in general. I really need help, please someone help me?