> I couldn't tell if you've done this yet or not, but before going that > far I would make sure you try a different cable and try both ports on > the drive (assuming it has two ports). I have an older drive where one > of the ports just doesn't seem to give me a good connection, while the > other port works fine. I tried that it did not give any results. > A couple other things I usually pay attention to when a drive doesn't > mount : > > Is the power light on and steady (not flickering)? > > When it starts up, do you hear the drive spin up? > > When its finished spinning up, do you hear a quick read or two occur (a > couple little "scritches")? I did not do that and I think you are right. The power light is on but there is not one sound when I switch on and off. I have never seen an external drive as silent as mine. I think the enclosure is the problem. I cannot put it in my G4 this one is already full with two disks, I maybe try to bring it to an Apple Center they could change the enclosure. Thanks to all Emmanuel