I have a 15-inch Macbook Pro with Retina Display that doesn't work with my USB 2 hard disk. It doesn't mount, doesn't show up in Disk Utility, and doesn't even show up in System Information in the USB section.
This hard disk works fine on my Ubuntu desktop, and it worked fine on my previous Macbook Pro (2009 model). It doesn't work on my new Macbook Pro, but another disk does.
This is a bus-powered drive. I tried rebooting my Mac, and plugging into a different USB port. The LED comes on when I plug it in, but that's it. If I put my ear to the disk, I hear mild clicking sounds (but I am not worried about data loss since the disk works great on my other machines, every time, without the clicking sound).
Any idea what I can try? Use an AC power adapter? Thanks.
Best Answer
It definitely sounds like its not getting enough power. Not all USB ports on all machines deliver the same power.