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TS3926: OS X Lion: Installer reports "This disk cannot be used to start up your computer"

Learn about OS X Lion: Installer reports "This disk cannot be used to start up your computer"

TS3926 Installing OSX Lion on MacBook Air

3729 Views 13 Replies Latest reply: May 6, 2012 9:29 AM by rockville RSS
rockville Calculating status...
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May 6, 2012 12:18 AM

I have a MacBook Air with solid state hard drive. The Disk Utility partition tool shows that "This partition cannot be modified". What can I do?

MacBook Air, Mac OS X (10.6.8), Total Capacity : 121.33 GB (121,332
  • clintonfrombirmingham Level 7 Level 7 (26,655 points)
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    May 6, 2012 1:43 AM (in response to rockville)

    Rock,

     

    Exactly what are you trying to do? Format the internal drive? I don't have a MacBook Air but I'm assuming that you'd have to boot from something like a USB Lion Install SD, go to Disk Utility, re-init the drive and install Lion from there. Can you be a little bit more specific on what you're trying to accomplish?

     

    Regards,

     

    Clinton

  • LexSchellings Level 5 Level 5 (5,475 points)
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    May 6, 2012 7:40 AM (in response to rockville)

    Just start the downloaded Lion file (in the Applications folder) on your MBA, It will install Lion.

  • LexSchellings Level 5 Level 5 (5,475 points)
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    May 6, 2012 7:53 AM (in response to rockville)

    Start Activity Monitor: click the DiskUsage button at the bottom: how much space do you have free?

    Did you download Lion from the Appstore to this MBA directly?

  • LexSchellings Level 5 Level 5 (5,475 points)
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    May 6, 2012 8:11 AM (in response to rockville)

    That is not the problem then. Did you buy and download Lion on this MBA ??

  • LexSchellings Level 5 Level 5 (5,475 points)
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    May 6, 2012 8:13 AM (in response to rockville)

    I like to ask another question:

    Shutdown the MBA, then start the MBA while holding the Alt(Option) key do you see more than one disk to start from?

  • keg55 Level 5 Level 5 (5,585 points)
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    May 6, 2012 8:44 AM (in response to rockville)

    Check with your company's IT department. I assume this is your personal MBA and not the company's that you work for?

  • LexSchellings Level 5 Level 5 (5,475 points)
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    May 6, 2012 8:45 AM (in response to rockville)

    You can have a password on the Firmware or the OS, you have one on the firmware, good, but your disk is security guarded (probably encrypted), and then you can not install an OS without doing something special: it would be too easy when anybody could overwrite a security guarded disk.

    I do not know how to do it, you better ask your IT manager.

  • clintonfrombirmingham Level 7 Level 7 (26,655 points)
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    May 6, 2012 9:15 AM (in response to rockville)

    rockville wrote:

     

    When I started the downloaded Lion file, it asked me "What hard drive do you want to install Lion on?". There is only one drive, but I cannot select it, (it was greyed out) because of his disk cannot be used to start up your computer". I did the exact same on my desktop machine with no problem. Thanks

    Rock,

     

    If you have a spare USB flash drive around you can make a copy of the Lion install on your desktop machine and use it to boot your MacBook Air. See the article here.

     

    Hope this will help,

     

    Clinton

     

    Oh, you can also install on your drive from the flash drive, too.

     

    Message was edited by: clintonfrombirmingham

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