SSD usable on a cMP 1,1, but not a 5,1?

Discussion in 'Mac Pro' started by Zeke D, Dec 21, 2016.

  1. Zeke D, Dec 21, 2016
    Last edited: Dec 21, 2016

    Zeke D macrumors 6502a

    Zeke D

    Nov 18, 2011
    Screenshot 2016-12-21 14.02.48.png I've got an odd problem. I had a pair of 120GB SSDs in my cMP 1,1, and recently upgraded to a cMP 5,1. One of the SSDs works just fine in in cMP 5,1, but the other isn't recognized by Disk Utility. To further make it crazy, if I throw it into an USB enclosure, it is recognized. It is recognized by the OS X boot selector, but if I try to boot to it, I get the circle/hash on the screen, and the cMP 5,1 just boots to another slot. I've tried it in all four slots, and the result is the same. I hooked it up to a windows box and did a DISKPART, but I still have the same issue. GUID and MBR both result in the same thing. I've also reset the SMC and PRAM.

    Any suggestions?
  2. Macschrauber macrumors regular


    Dec 27, 2015
    Really odd, give us a diskutil list in terminal

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