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How to get my Mac Pro into recovery mode

439 Views 7 Replies Latest reply: Jan 8, 2013 1:17 PM by Grant Bennet-Alder RSS
Gerungof Calculating status...
Currently Being Moderated
Jan 6, 2013 8:34 AM

I tried to install Windows 7 on the second hard drive of my new Mac Pro, but I think I deleted the 200MB-sized EFI-partition, because when I try to restart it says "no system disk. Press any key to restart", but it doesn't do anything when I press Option-key or Cmd+R. I can't get any system working. Thanks for helping me in advance!

Mac Pro, OS X Mountain Lion (10.8.2)
  • mende1 Level 10 Level 10 (89,470 points)
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    Jan 6, 2013 8:37 AM (in response to Gerungof)

    Welcome to the Apple Support Communities

     

    Your Mac can work without the EFI volume, but I doubt that you deleted it. The EFI volume is only used to store firmware updates and install them on its next boot.

     

    Try pressing X key to start into Mac OS X. If it doesn't work, reset the PRAM, so the startup disk will be restored to factory settings

  • Grant Bennet-Alder Level 8 Level 8 (48,110 points)
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    Jan 6, 2013 10:03 AM (in response to Gerungof)

    Press any key to restart

    When you get that obtuse prompt, it is not coming from Mac OS X.

    Those sorts of useless messages come only from Windows.

     

    As mende says, you need to get control of your Mac BEFORE it commits to booting Windows and gets stuck there.

     

    In addition to his suggestions, you could hold the Alt/Option key at Startup. This invokes the All-in-ROM Startup Manager, which will look at all Volumes and draw an icon for each potentially-bootable Volume.

    Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers
  • The hatter Level 9 Level 9 (58,535 points)
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    Jan 6, 2013 1:15 PM (in response to Gerungof)

    never install Windows on t he same drive as Mac

    pull all t he oter drives

    let Windows totally format and take over its own hard drive.

     

    Works like a charm.

  • mende1 Level 10 Level 10 (89,470 points)
    Currently Being Moderated
    Jan 7, 2013 11:04 AM (in response to Gerungof)

    You have to press them after the startup sound, not when the black screen has appeared. You can't do anything when this screen shows up

  • Grant Bennet-Alder Level 8 Level 8 (48,110 points)
    Currently Being Moderated
    Jan 8, 2013 1:17 PM (in response to Gerungof)

    You must have the keyboard connected Directly to a USB port on the chassis, not on a Display or Hub.

     

    The Hubs are initialized too late for "snag keys" to be seen at Startup.

    Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers

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