13 Replies Latest reply: May 6, 2012 9:29 AM by rockville
rockville Level 1 Level 1

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
Solved by rockville on May 6, 2012 9:29 AM Solved

I think you're right. The problem must be the disk encryption by CheckPoint Software. It must have stopped the OS upgrade. Thanks.

Reply by Lexiepex on May 6, 2012 8:45 AM Helpful

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 any could overwrite a security guarded disk.

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

Reply by clintonfrombirmingham on May 6, 2012 9:15 AM Helpful

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

All replies

  • clintonfrombirmingham Level 7 Level 7
    expertise.macosx
    Mac OS X

    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

  • rockville Level 1 Level 1

    Hi,

     

    I have a MacBook Air with 121 GB Solid State Drive, running Snow Leopard (Mac OSX 10.6.8). I would like to upgrade to OSX Lion. I purchase OSX Lion from Apple Store in downloadable format (no CD!). I could upgrade to Lion from the downloadable OSX disk image on my desktop (which has a hard drive and more disk space) fine. When I do that, the start up disk was also   the same hard drive that contains the downloaded OSX Lion image.

     

    I did the exact samething with the MacBook Air, but now I get a message "This disk cannot be used to start up your computer". The MacBook Air does not have a built-in CD player, although I do have an Apple external CD/DVD player. But then I do not have the Mac OSX Lion boot CD!

     

    Thanks,

  • Lexiepex Level 6 Level 6
    expertise.macosx
    Mac OS X

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

  • rockville Level 1 Level 1

    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

  • Lexiepex Level 6 Level 6
    expertise.macosx
    Mac OS X

    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?

  • rockville Level 1 Level 1

    I have 120.99 GB total Solid State Drive space. Space utilized is 78.78GB. Space free is 42.21GB. Thanks

  • Lexiepex Level 6 Level 6
    expertise.macosx
    Mac OS X

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

  • Lexiepex Level 6 Level 6
    expertise.macosx
    Mac OS X

    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?

  • rockville Level 1 Level 1

    yes, I did buy and download Lion on this MBA. Start MBA while holding the Alt(Option) key, I only see one disk. This MBA has a CheckPoint Software (which is a security feature my company insists on), which forced me to login first, before the Mac screen come up. It may be this software won't allow the OS to be overwritten?

  • keg55 Level 6 Level 6
    expertise.macosx
    Mac OS X

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

  • Lexiepex Level 6 Level 6
    expertise.macosx
    Mac OS X

    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
    expertise.macosx
    Mac OS X

    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

  • rockville Level 1 Level 1

    I think you're right. The problem must be the disk encryption by CheckPoint Software. It must have stopped the OS upgrade. Thanks.