Please visit the new Mac-Forums Facebook page:

Results 1 to 2 of 2
  1. #1
    Mac Pro 3.1 RAID 1 error
    Hey guys,

    I'm currently using a very old Mac Pro 1.1 as a server running 10.6.8, it has 4 HDDs that are paired for RAID 1 and they're finally running out of space.

    I bought 4 new drives and created an identical RAID structure in the hope of using CCC to simply clone the volumes and everything went well... until I plugged them into a slightly better machine, the Mac Pro 3.1.

    It boots, sees all the drives, sees the RAID and mounts all the volumes, network accounts are available and I can even login. But I have a couple of issues...

    It's mounting all the hidden "Boot OS X" partitions per volume, as you can see here in Finder:

    Here's Disk Utility displaying all volumes: &

    And Terminal:

    And here's what I see when I hold option at boot:

    Although I'm not sure if this one is normal or not, I'm pretty sure it should only be displaying the unified SYSTEM volume and not the two partitions.

    I booted into a clean version of 10.6.3 from an external drive on the same machine and everything looks fine, here are those same screens...

    Disk Util: &

    The biggest difference I see is that all the "Boot OS X" volumes are unmounted. But why is there a difference? Is this an issue with some file/setting/preference on the SYSTEM drive? Or how the machine is recognising the RAID?

    There's also a permissions issue for all network users, when they login they don't have the correct permissions to open or do anything. This was partly expected but both the original and new drives have the exact same permissions and I'm wondering if this is related to the RAID/mounting issue.

    Any help would be greatly appreciated.

  2. #2
    Mac Pro 3.1 RAID 1 error
    lclev's Avatar
    Member Since
    Jul 24, 2013
    Ohio (USA)
    Your Mac's Specs
    2017 13" MBPro, 2013 13" MBAir, 2010 MacPro, iPhone X
    Rep Power
    The only idea I have is to download and run Onyx - see my signature below for link. Download the correct version for your mac and run the automation selection. It does wonders to fix permissions.

    Recommend using Onyx to clean your Mac.
    If you have been helped, please add to their reputation by clicking on the icon in the lower left hand corner of the post.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Error in RAID Configuration
    By gflamberth in forum macOS - Operating System
    Replies: 3
    Last Post: 06-23-2016, 02:14 PM
  2. Replies: 4
    Last Post: 11-11-2010, 08:19 PM
  3. expand raid-0 and convert to raid-5 ?
    By kvdv in forum Other Hardware and Peripherals
    Replies: 0
    Last Post: 11-30-2009, 09:03 PM
  4. Breaking a RAID 1, Creating Raid 0
    By SarahS in forum Other Hardware and Peripherals
    Replies: 0
    Last Post: 12-03-2008, 04:16 PM
  5. 2 X 10K Drive Raid 0 vs Single 15K Non-Raid
    By quadra in forum Apple Desktops
    Replies: 0
    Last Post: 11-24-2007, 01:28 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts