Resolved Mac Pro 3,1 - Mojave - OWC Accelsior S

Discussion in 'Mac Pro' started by HansX, May 18, 2019.

  1. HansX macrumors newbie

    HansX

    Joined:
    May 18, 2019
    Location:
    Berlin, Germany
    #1
    Hi

    I recently upgraded my MP 3,1 to Mojave with dosdudes Mojave patcher. Before that I was running and booting El Capitan from an OWC Accelsior S SSD board. Since I have moved to Mojave the boot from the OWC board will not work anymore. I've tried installing Mojave straight to the SSD which results into not finding the SSD as a boot drive during startup. Same result when I clone the Mojave HDD to the OWC SSD board. Any ideas whether OWC can be used as an external SSD boot drive on a MP 3,1. Booting Mojave from my HDD works perfect. Any idea appreciated.

    Bets regards Hans
     
  2. jbarley macrumors 68040

    jbarley

    Joined:
    Jul 1, 2006
    Location:
    Vancouver Island
    #2
    Does the drive show in "Disk Utility"?
    If it does, have you tried re-partitioning it?
    I have run Mojave on a SanDisk 500GB SSD mounted on an OWC Accelsior S PCIe card formatted APFS in my MP3,1 without any issues whatsoever.
    I have also used HFS+ successfully in the past.

    Right now I'm composing this post on a MP4,1/5,1 booted and running Mojave 10.14.6 beta1 from that very same OWC Accelsior S.


     
  3. HansX thread starter macrumors newbie

    HansX

    Joined:
    May 18, 2019
    Location:
    Berlin, Germany
    #3
    When I install Mojave I do a full partion of APFS first and install it. Once the install is done, the post install pathces were run, I remove the USB stick, restart from scratch holding down the alt key and the SSD sitting in the OWC board is not shown as a choice to boot from.
     
  4. jbarley, May 19, 2019
    Last edited: May 19, 2019

    jbarley macrumors 68040

    jbarley

    Joined:
    Jul 1, 2006
    Location:
    Vancouver Island
    #4
    And it never will, but you should see something called "EFI Boot", click on that and tell us what happens.
    This is how my MP3,1 Boot screens shows up, the marked drive boots Mojave on my APFS Accelsior SSD.
    It's only this way on unsupported systems BTW.

    photo.JPG
     
  5. HansX thread starter macrumors newbie

    HansX

    Joined:
    May 18, 2019
    Location:
    Berlin, Germany
    #5
    Hi

    no idea what wrent wrong. Nevertheless I repeated the process for the 5th or 6th time and now everything works from the OWC SSD board. Thanks for your support. Problem solved :)

    Br Hans
     

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4 May 18, 2019