why can't i start-up on snow leopard disc?

Discussion in 'MacBook Pro' started by SPNarwhal, May 6, 2011.

  1. SPNarwhal macrumors 65816

    SPNarwhal

    Joined:
    Apr 22, 2009
    Location:
    illinois
    #1
    I try to restart my computer and hold C on start up to start up on Snow Leopard Disc, and it begins to show the loading circle, but then comes down telling me to restart my computer by holding down the Power Button.

    When I turn the computer back on and it loads to the OS, it tells me it shut down based on a problem or something like that and to "ignore, or report"

    What is going on? It's worked before. It should start up to show options to install snow leopard and wipe the disc, etc etc. Fresh install or upgrade.

    I tried startup with holding option and selecting the disc as well, no go. I cleaned the disc and it's not scratched or anything. What is going on?
     
  2. r.j.s Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Texas
    #2
    Are you using a gray disc or retail?

    If it is gray, is it the one that came with your machine?
     
  3. SPNarwhal thread starter macrumors 65816

    SPNarwhal

    Joined:
    Apr 22, 2009
    Location:
    illinois
    #3
    It's a retail disc. It's white and has the snow leopard on it.
    It's not the one that came with my machine since my machine was a 2010 model and came with Leopard.
    But I have been able to boot to this disc before.
     
  4. Naimfan macrumors 68040

    Naimfan

    Joined:
    Jan 15, 2003
    #4
    Your optical drive could be faulty--try an an external if you can.

    Edited to remove scratched/dirty disc possibility.
     
  5. laflores macrumors regular

    Joined:
    May 5, 2011
    Location:
    Costa Rica
    #5
    Put your Snow Leopard disc in the drive. Turn off your computer. Press and hold the OPTION key and turn it on. Keep holding the OPTION key until you see the boot menu. Wait for some seconds, and your disc should show as a boot option.
     
  6. SPNarwhal thread starter macrumors 65816

    SPNarwhal

    Joined:
    Apr 22, 2009
    Location:
    illinois
    #6
    I've done this, still does not work.

    It starts to read the disc and will show the segmented circle loader thing, and it shows as if it's loading from the disc. But then a message appears saying to shut down the computer (in a bunch of different languages) and shoes a power symbol.
     
  7. Naimfan macrumors 68040

    Naimfan

    Joined:
    Jan 15, 2003
  8. adcx64 macrumors 65816

    adcx64

    Joined:
    Nov 17, 2008
    Location:
    Philadelphia
    #8
    Go to preferences ---- startup disk--- select the os x install disk.
     
  9. frankieboy macrumors regular

    Joined:
    Jun 29, 2009
    #9
    My MBP 2011 won't start up off of SL retail discs either, because the 2011 MBP requires a special build of SL. Most SL retail discs are probably 10.6.3: the 20111 MBP requires a special build of 10.6.6 or 10.6.7.

    So what you are experiencing may be perfectly normal, depending on your model. Use the disc that came with your computer instead.
     
  10. mr1 macrumors member

    Joined:
    Feb 24, 2011
    #10
    What he said... no current retail discs will work with 2011 mbp.
     
  11. discounteggroll macrumors 6502

    discounteggroll

    Joined:
    Aug 6, 2006
    Location:
    Greenwich, CT
    #11
    Good to know. Hope the 10.6.7 retail discs hit shelves soon
     
  12. keantan macrumors regular

    Joined:
    Nov 6, 2008
    Location:
    Penang, Malaysia
    #12
    Would like to point out from experience that generally mac's won't boot from OS X disks that contain versions of OS X that are older than the its shipped version. I.e. a computer that shipped with 10.6.5 wont boot from a 10.6.0 cd. (I don't change computer too often but this has always been the case for me).
     
  13. snaky69 macrumors 603

    Joined:
    Mar 14, 2008
    #13
    That's a kernel panic. Probably caused by a hardware problem seeing as it's on startup. You could have bad ram, an optical drive going bad or even a logic board problem.
     
  14. Mal macrumors 603

    Mal

    Joined:
    Jan 6, 2002
    Location:
    Orlando
    #14
    You actually have a late 2009 model, because the 2010 models came with 10.6.3.

    And he definitely doesn't have a 2011 model, so this isn't accurate. The retail disk should work fine.

    OP, as noted, you probably have a bad disk or optical drive. Could even be failing RAM, though it'd be unusual for it only to cause the kernel panic when you try to boot from the OS disk.

    jW
     

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