iMac won't boot into single user mode.

Discussion in 'Mac Basics and Help' started by dogbone, Feb 10, 2007.

  1. dogbone macrumors 68020


    Sep 16, 2005
    S33.687308617200465 E150.31341791152954
    I'm trying to speed up a very sluggish imac and thought I'd run through applejack but if I hold down the shift key when restarting it gets stuck at the grey screen and I have to turn it off. It boots up normally otherwise. There's plenty of ram and hd space.

    So what could be causing it to not want to start in single user mode.
  2. Angrist macrumors 6502

    Mar 11, 2005
    MI or NJ
    IIRC holding shift boots into "safe mode", not single user mode. Safe mode runs a filesystem and hardware check while it's sitting at the grey so it takes a LOOOONG time to boot.

    Single user mode is started by holding cmd-S while booting.
  3. mynerdpantsrhot macrumors newbie

    Mar 10, 2011
    My iMac won't boot in single user mode

    Hey! Hope to find some help. I am trying to run disk utilities on my iMac
    Model Name: iMac
    Model Identifier: iMac5,1
    Processor Name: Intel Core 2 Duo
    Processor Speed: 2.16 GHz
    Number Of Processors: 1
    Total Number Of Cores: 2
    L2 Cache: 4 MB
    Memory: 2 GB
    Bus Speed: 667 MHz
    Boot ROM Version: IM51.0090.B09
    SMC Version (system): 1.9f4
    I've tried: command s (single user mode)
    option (to choose start up disk)

    I could run Applejack or Disk Utility or fsck. I'd even make a copy of my HD on an external HD and then run diskutilities from their but can't get it to let me have some start up options.

    Please help.:(

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