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Can't boot into safe mode

1943 Views 11 Replies Latest reply: Mar 2, 2014 1:47 PM by bonimac RSS
Michael Levin Level 2 Level 2 (175 points)
Currently Being Moderated
Apr 18, 2011 7:04 AM

I am running 10.6.7 on a RAID0 internal disk set. I am booting fine into it, but when I try to hold down Shift for Safe-mode boot, I get the little gray spinning circle, and then above it appears a gray circle with a line through it (line a "do not" road sign!) and then 20 minutes later, nothing - the little gray spinner is still spinning, and no progress bar for safe mode. What's going on?

 

thanks in advance,

 

Mike

Intel Mac Pro, Mac OS X (10.6.7)
  • ryan42 Level 3 Level 3 (825 points)
    Currently Being Moderated
    Apr 18, 2011 8:15 AM (in response to Michael Levin)

    Are you using Apple's software RAID0 or a third party software RAID or RAID card? I would imagine if you were using a third party driver or card, the driver doesn't get loaded in safe mode so it can't find root device and can't boot.

  • ryan42 Level 3 Level 3 (825 points)
    Currently Being Moderated
    Apr 18, 2011 9:18 AM (in response to Michael Levin)

    Ah. Well sure 'nuff, no Safe Mode for you. I just tried it on my Mac Pro with Apple Software RAID0 and same thing. I'm guessing it's still because the driver isn't loading and it can't find the root device.

     

    I guess we need to have a mirror of our startup volume in case anything happens.

  • Mike-B Level 1 Level 1 (0 points)
    Currently Being Moderated
    Jun 28, 2011 4:34 AM (in response to Michael Levin)

    Well, glad I discovered this post. Been wondering for some time why my 2010 Mac Mini Server could not complete a Safe Boot.

     

    Does anyone know if Apple are aware of this RAID 0/Safe Mode issue?

  • bonimac Level 1 Level 1 (20 points)
    Currently Being Moderated
    Sep 25, 2011 8:16 PM (in response to Michael Levin)

    hm, new mac mini server 2011 with Lion.

    Same here. Configured in in RAID 0, no safe modus anymore.

  • Robert Mohns Calculating status...
    Currently Being Moderated
    Nov 27, 2011 9:40 AM (in response to Mike-B)

    Yes, known problem. Reportedly fixed in Lion, but I see @bonimac says that a Mini server has this problem with Lion.

  • bonimac Level 1 Level 1 (20 points)
    Currently Being Moderated
    Nov 27, 2011 9:55 AM (in response to Robert Mohns)

    oh, i'm surprised. Thought it was in a way related to a RAID configuration. This is my first RAID setting.

    Another thing that i notice is the absence of permissions repair. I can still click the button though, but in a second it's finished. No report at all.

    Mysteries to me.

  • forappie Level 1 Level 1 (20 points)
    Currently Being Moderated
    May 17, 2012 2:24 AM (in response to bonimac)

    Just tried a Safe Boot again but in 10.7.3 the problem of No Safe Boot on a MacMini Server 2011 with RAID still persists.

     

    I think it's the RAID that also prevents you from repairing disk permissions using Disk Utility. However, you can repair disk permissions from Terminal as follows:

         sudo diskutil repairPermissions /

  • ds store Level 7 Level 7 (30,305 points)
    Currently Being Moderated
    May 17, 2012 6:11 AM (in response to ryan42)

    ryan42 wrote:

     

    I guess we need to have a mirror of our startup volume in case anything happens.

     

    One always needs a mirror of a RAID 0 set.

     

    It's because the data path is split, the more drives, the more potential for total data failure.

     

    Speed comes at a hefty price, a nightly auto-clone/updated backup and another clone on a single spindle.

  • bonimac Level 1 Level 1 (20 points)
    Currently Being Moderated
    Mar 2, 2014 1:47 PM (in response to Michael Levin)

    meanwhile i'm on OS X Mavericks 10.9.2.

     

    Still no save boot available.

     

    little addition: for users who have filefault activated it is the same story.

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