Resolved Formatting MBA late 2010 - Need help ASAP please

Discussion in 'MacBook Air' started by 3bs, Jun 30, 2012.

  1. 3bs, Jun 30, 2012
    Last edited: Jun 30, 2012

    3bs macrumors 603

    3bs

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    May 20, 2011
    Location:
    Dublin, Ireland
    #1
    I'm about to sell my MBA and I have my Snow Leopard usb drive that came with it but when I boot up holding the option/alt key and pick the usb drive and choose to install it on Macintosh HD it says "Mac OS X cannot start up from this disk" what do I have to do? I have Lion installed currently and used disk utility to erase my Macintosh HD.

    I tried reinstalling Lion before erasing Macintosh HD but towards the end I got a pop up asking me if I was sure I wanted to cancel the download when I didn't click cancel. I dismissed it but it kept popping up so I'm starting over again now.
     
  2. 3bs thread starter macrumors 603

    3bs

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    #2
    It happened again. When it was done download I got a pop up saying "Are you sure you want to cancel the download of OS X Lion?" with options "cancel" and "cancel download". I press Cancel and it popped up twice again so I press it again then it takes me to the main menu with Restore from time machine etc.
     
  3. lannisters4life macrumors 6502

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    Sydney
    #3
    I'm a little confused, are you doing all this from within the Lion recovery partition? And it's coming up with the cancel prompts as you're downloading a new copy of Lion? Reset the PRAM?
     
  4. 3bs thread starter macrumors 603

    3bs

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    #4
    I tried holding down command + R at boot and stopped pressing when the Apple logo appeared but then I get the spinning wheel under it and after a while I get the circle with a line through it diagonally (error sign?)

    ----------

    Yeah that's correct. I will try resetting PRAM after what I'm doing now. I used the Mac app Recovery Disk Assistant to make a recovery HD on my flash drive and I am now downloading Lion using that. Let's see if I get the error again when it's done downloading.
     
  5. lannisters4life macrumors 6502

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    #5
    The circle with a line through is can't find bootable disk. If that's coming up after you command + R, try getting there by just holding option on restart, and then select the Lion recovery partition that way with the keyboard arrows.

    Still try to reset PRAM with command + option + P + R on a restart.

    edit: oh right i just saw your update
     
  6. 3bs thread starter macrumors 603

    3bs

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    #6
    I'm downloading Lion now. Got here using the option key. It's taking long though. Longer this time with the flash drive then when I tried downloading with the recover hd on my mac. The time has increased in the past 10 mins and I have a 100mbps connection so 54 mins seems a bit long. Should I cancel and reset PRAM then try again?
     
  7. silverjam macrumors regular

    Joined:
    Apr 25, 2012
    #7
    Your MBA is a Snow Leopard version Mac so you should simply need to erase the hard drive in Disk Utility then exit Disk Utility and click "Install new OSX" or something like that (i.e. don't choose the Time Machine Option). It will then instal OSX SL from your thumb drive?


    If you want to install Lion. I have either done that the same way as above but used a Lion Boot Disk (i.e. fresh instal) or through installing Lion through the App Store after you have installed SL.

    I have only ever downloaded Lion through Internet Recovery on Macs Like the 2011 MacBook Air or Mac Mini where they don't have a USB thumb drive option. I am not sure of the procedure (or if it even works) to download Lion via the boot recovery option on a "non-Internet-Recovery model" such as the 2010 MBA. Having said that I think some 2010 MBA did have the newer internet recovery option.

    Either way, can't you just install SL via the thumb drive that came with the MBA? Technically your version of Lion belongs to your Apple ID so you could just install it through the App Store after you load SL.

    Silver
     
  8. 3bs thread starter macrumors 603

    3bs

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    #8
    Yeah I don't care what version it's on because I'm selling it but when I pick to install using the thumb drive on Macintosh HD it says "Mac OS X cannot start up from this disk"
     
  9. silverjam macrumors regular

    Joined:
    Apr 25, 2012
    #9
    No let it run. If it works then do PRAM after the install. You might want to try a SMC reset as well by pressing the Shift-Control-Option and Power buttons all at the same time while the MBA is shut down but plugged into the power. Sounds like it is working to me now anyway.
     
  10. 3bs thread starter macrumors 603

    3bs

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    #10
    Time dropped a lot. Down to 6 mins now. If it doesn't work and I try resetting PRAM and SMC what next? When I pick to install SL using the thumb drive on Macintosh HD it says "Mac OS X cannot start up from this disk"
     
  11. silverjam macrumors regular

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    Apr 25, 2012
    #11
    I am guessing it says that if you had Lion already installed with the new recovery partition as well possibly. That is. the MBA doesn't like the older thumb drive format/SL OS. I am guessing you should be able to boot from the thumb drive if your hard drive is erased?

    If all else fails see this link

    http://support.apple.com/kb/DL1433?viewlocale=en_US&locale=en_US

    This allows you to set up a Lion Recovery Partition on a thumb drive. I use this often as it allows you to play around with the internal SSD on a MBA properly as the normal Recovery Partition is actually a partition on the SSD so your are always limited in formatting.

    Once you have the RP Thumb Drive it will show up when you hit Option on start.

    ----------

    I forgot to note you will need another Mac to make the thumb drive.
     
  12. 3bs thread starter macrumors 603

    3bs

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    #12
    That's what I'm doing now :p

    Seems to have worked with a thumb drive Lion recovery partition. Finished downloading and it's installing it now. I erased Macintosh HD using disk utility. Is it safe to assume everything I had is gone now? I don't want to go past the welcome screen after it's done installing but I will if it's necessary to check.


    Thanks a lot for your patience and information! I was in such a rush since I'm going to be selling it today.
     
  13. scarred macrumors 6502a

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    Jul 24, 2011
  14. 3bs thread starter macrumors 603

    3bs

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    #14
    I don't have anything sensitive on it's so it's fine but like will there be anything left after just erasing using disk utility (it showed my HD having full capacity available) and reinstalling Lion?
     
  15. KPOM macrumors G5

    Joined:
    Oct 23, 2010
    #15
    Yes. For the new owner, it will be as if he or she is opening a new Mac for the first time.

    Are you using the proceeds to get a 2012?
     
  16. silverjam macrumors regular

    Joined:
    Apr 25, 2012
    #16
    If you erased the drive originally and did a fresh instal then yes your files are gone from a GUI OSX visual point of view. But technically as you have an SSD some files may remain in theory until they are overwritten. Overwriting and SSD is not so simple though as it is with a standard HD so there isn't much you can do in the short time you have. You would need to be forensically inclined to access your old files though and secondly the old data begins to be split up as soon as part of the old file is dealt with through the TRIM mechanism in OSX.

    It is always a concern when selling on a SSD Mac but up to you as to what bothers you relation to your old files. I am talking about the ridiculous extreme scenario of one in one thousand so it is theory as opposed to practice.

    If you want a quick and reasonable safe option then run OSX until it is properly installed, then load as many video files (or files that are note security/personal files) on the SSD on a temp folder until your drive is 98% full, then delete the temp folder. At least you know you have overwritten the vast majority of your drive. Only the 2% plus the over provisioning part of the SSD could hold your old data. It's a simple way of overwriting as Disk Utility won't let you do it on your SSD.

    Good luck.

    Silver
     
  17. 3bs thread starter macrumors 603

    3bs

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    #17
    Already bought a 2012 11" ultimate and typing this using it :p

    Thanks a lot for all the info and help Silver!
     

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