Clean Mountain Lion install without USB & drive

Discussion in 'OS X Mountain Lion (10.8)' started by Hyldig, Jul 25, 2012.

  1. Hyldig, Jul 25, 2012
    Last edited: Jul 31, 2012

    Hyldig macrumors newbie

    Joined:
    Feb 24, 2011
    #1
    hi all

    Just wanted to tell that on Macs with the internet recovery function, it's posible to to a complete clean Mountain lion install already.

    On my air i bought and install mountain lion from store.
    After install was complete, booted into the recovery, formated with diskutility, and it could install Mountain Lion over internet :)

    EDIT: This is not using the Internet recovery funtion. This is just using the Recovery Partition
     
  2. peejack macrumors 6502a

    Joined:
    Aug 7, 2007
    #2
    So new mac, if you just format with the internet recovery they will install Mountain Lion instead of lion? I got my macbook pro yesterday and was going to download mountain lion, burn it then fresh install. You mean I don't have to do this?
     
  3. Hyldig thread starter macrumors newbie

    Joined:
    Feb 24, 2011
    #3
    I don't know if you need have mountain lion installed first, from a normal App stroe upgrade like i did.

    But you don't have to burn anything.
     
  4. peejack macrumors 6502a

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    Aug 7, 2007
    #4
    But the recovery doean't ask for your mac store I.D just checks your computer and downloads the relevant version right?
     
  5. BadaBing!! macrumors 6502

    BadaBing!!

    Joined:
    May 16, 2010
    #5
    Good to know. I have a 2011 MacBook Air and I want a clean ML install.
    I'll try it, thanks.
     
  6. peejack macrumors 6502a

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    Aug 7, 2007
    #6
    I think if you do internet recovery on 2011 it will install Lion. I presume it will check serial number and only install ML on newer machines that qualify?
     
  7. Hyldig thread starter macrumors newbie

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    Feb 24, 2011
    #7
    Hmm.. actually it asked for my app store login somwhere in the odwnload process from recovery, if i remember correct.


    Mine is a 2011 Air
     
  8. BadaBing!! macrumors 6502

    BadaBing!!

    Joined:
    May 16, 2010
    #8
    So, to confirm ... Buy ML from App Store, Install it, then reboot and do a recovery to get a clean ML (NOT Lion) install will work on a 2011 Air ?
     
  9. whohasaquestion macrumors 6502

    Joined:
    Sep 17, 2011
    #9
    So upgrade then clean install?

    I've got time machine/time capsule combo. I presume I can choose which folder to restore after the clean installation? The only concern I have right now is my iTune library. Every time I mess with it, it either lost album cover or put tracks on different albums...
     
  10. Hyldig thread starter macrumors newbie

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    Feb 24, 2011
    #10
    Yep. thats excactly what i did on my 2011 MB Air
     
  11. scarred macrumors 6502a

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    Jul 24, 2011
    #11
    Worked for me as well. Not quite '5 minutes', but painless nonetheless.
     
  12. Hyldig thread starter macrumors newbie

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    Feb 24, 2011
    #12
    heh no the "done in 5min" was meant as. Mine is done 5min from now, when i posted
    But i can see why it's understood this way :)

    takes about 45min with a good internet connection from you press "buy"
     
  13. peejack macrumors 6502a

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    Aug 7, 2007
    #13
    Did you install ML first?
     
  14. scarred macrumors 6502a

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    Jul 24, 2011
    #14
    Yes. Just like the OP noted:

    From OSX Lion, purchase ML.
    Install it.
    Shutdown and start with cmd+R.
    Enter disk utility, Erase your drive.
    Click the Install button.

    Done. Very happy to have done this. Dock, Launchpad and other settings nicely defaulted.
     
  15. peejack macrumors 6502a

    Joined:
    Aug 7, 2007
    #15
    Cool think I will do that. I done recovery yesterday for a brand new machine as I installed a new ssd. So i'll purchase ML then do the recovery again :)
     
  16. Vctr macrumors regular

    Joined:
    May 24, 2012
    #16
    Is this legit? If so, I'm surprised there isn't more discussion in this thread. This method basically saves you the time of creating a bootable USB key, right?
     
  17. d3vilsadvocate macrumors newbie

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    Apr 15, 2012
    #17
    I tried it, did not work with my 2011 MBA... still wanted to install lion after the upgrade to ML.
     
  18. iThinkergoiMac macrumors 68030

    Joined:
    Jan 20, 2010
    Location:
    Terra
    #18
    Why would you do it this way? Seems like the slowest way possible to do a clean install. Just get an 8 GB flash drive and make a USB installer. Much, much faster.

    ----------

    And adds the time of re-downloading most of the OS again. Unless your internet connection is faster than USB 2 (in other words, unless you have all the internet resources of a large university or corporation at your, and only your, disposal) you still save time (and future headache) by creating a USB installer.
     
  19. hafr macrumors 68030

    Joined:
    Sep 21, 2011
    #19
    Not all MBPs can be booted from USB, and should you not have the things needed this is the fastest way of doing it than venture out to purchase what's missing. Unless you live next to a store selling what you need :)
     
  20. Scuba629 macrumors regular

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    Jul 14, 2010
    #20
    wow this will really work? I was getting ready to make a USB drive but if its this easy I won't bother. My internet is really fast at home and if this truely is possible on the new MacBook Airs(2012) ill do it when I get home.
     
  21. iThinkergoiMac macrumors 68030

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    Jan 20, 2010
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    Terra
    #21
    There are no Macs that can't boot from USB that Mountain Lion can install to (who said anything about just MBPs?) that I'm aware of. And, if you don't have a USB device with that much storage or a DVD burner, those are probably things you should get anyway.

    There's nothing WRONG with doing it this way, just seems like a waste of time to me.
     
  22. hafr macrumors 68030

    Joined:
    Sep 21, 2011
    #22
    The early 2011 MBP can't boot from USB, the option to create a bootable USB in BootCamp Assistant is even greyed out :( Either way, far from everyone have a USB stick of at least 8 GB or writeable DVD's just lying around.

    This way might be a waste of time for you, but for others it's both the simplest and the fastest way of doing it. For me, it would be the only option until tomorrow morning when I can go out and get writeable DVD's, since I can't boot my mac from any of the USB sticks or drives that I have :mad:
     
  23. deeddawg macrumors 604

    Joined:
    Jun 14, 2010
    Location:
    US
    #23
    Which models are able to use Internet Recovery but can't boot from USB? I'm not thinking of any...


    It's really easy to make the USB drive. The time to do the restore to the drive from the downloaded installer is less than upgrading then downloading ML the second time, but maybe not enough to balance a separate trip to a store to buy a $7 8GB stick.

    Still, having the recovery stick isn't a bad thing.

    Whichever works for ya.

    ----------

    Weird. My daughter's 2010 MBP13 was able to boot from the USB stick this morning.

    I *did* have to select it as Startup Disk from System Preferences first then reboot and it came up booting from the stick.
     
  24. Hyldig thread starter macrumors newbie

    Joined:
    Feb 24, 2011
    #24
    agreed, it's alot easyer to use a USB if you got one...
    i dont..

    If you don't have a 4+GB USB or DVD-drive. (why it says "without USB & drive" in topic title) this method seems pretty easy and not very time consuming to get a clean install to me.
     
  25. hafr macrumors 68030

    Joined:
    Sep 21, 2011
    #25
    Take a look at this discussion, I read it and followed every tip in there (plus tons of tips from other sites) to get my MBP to boot from USB - never did succeed... I'm not even sure target disk works with USB-drives (but I know it works with FireWire and ThunderBolt). https://discussions.apple.com/thread/3410900?start=0&tstart=0

    Maybe USB-drives with an OS X install is different and would boot even early 2011 MBP's... But I can't choose a USB-drive as a startup disk no matter what boot loader is on there...
     

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