Clean Install

Discussion in 'Mac OS X Lion (10.7)' started by Daniel97, Jul 18, 2011.

  1. Daniel97 macrumors 6502a

    Joined:
    Mar 6, 2011
    #1
    I am about to wipe my HD and do a clean install ready for Lion.

    Just want to clarify

    Back up to HD via CCC.

    Turn mac off - reboot holding down the alt key with the SL cd inserted.

    Use disk utility to wipe the disk in my mac .. instal from SL CD.

    Once thats all done .. which folders do i need to copy from the CCC backup.

    I obviously want all my files back and my apps ..
     
  2. WeegieMac Guest

    WeegieMac

    Joined:
    Jan 29, 2008
    Location:
    Glasgow, UK
    #2
    I've got a 1TB Western Digital external USB drive, and what I've done is basically install Snow Leopard on a partition on there, and back up all the files from my main system on the other partition.

    That way, I can simply boot into the external partition, open Disk Utility, format Macintosh HD, then run the Lion installer from Snow Leopard on the external drive, pointing the installer to the now blank Macintosh HD.
     
  3. stefan1975 macrumors 6502a

    Joined:
    Apr 15, 2010
    #3
    why go to all this trouble in doing a clean SL install and then *still* upgrade to lion. if you are going to do a clean install why not just do a clean install of lion instead.

    otherwise it is clean install SL 10.6.x upgrade to 10.6.8 buy lion upgrade to 10.7 instead of starting fresh with lion and no SL remnants.
     
  4. Daniel97 thread starter macrumors 6502a

    Joined:
    Mar 6, 2011
    #4
    because you need SL to install Lion .. you can't just instal lion .. it has to be done over the top of SL
     
  5. xpower180 macrumors regular

    xpower180

    Joined:
    Jan 23, 2011
    Location:
    UK
    #5
    I understand how that's done with a GM image, but will a truly 'clean' install of Lion be possible using the retail (app store) version?


    Cheers, Jay.
    Sent from my iPad 2
     
  6. WeegieMac Guest

    WeegieMac

    Joined:
    Jan 29, 2008
    Location:
    Glasgow, UK
    #6
    It doesn't need to be installed over the top of Snow Leopard.

    You need to boot the installer from Snow Leopard, but once in the installer you can select which available drive to install onto, which is why my external drive running Snow Leopard is ideal.

    Tried and tested with the GM too.
     
  7. stefan1975 macrumors 6502a

    Joined:
    Apr 15, 2010
    #7
    errrr no it doesn't. it just needs SL to purchase and download it. *not* to install it. i did a clean DVD install myself, no problems whatsoever nor any remnants of SL on my system.
     
  8. WeegieMac Guest

    WeegieMac

    Joined:
    Jan 29, 2008
    Location:
    Glasgow, UK
    #8
    The retail image will work exactly the same as the GM one, it's a file ... nothing will change other than the fact your App Store downloaded copy will be digitally signed to you.
     
  9. stefan1975 macrumors 6502a

    Joined:
    Apr 15, 2010
    #9
    you don't even need to do that. just burning the image in the .app to a dvd and booting form it will get you a clean install. nothing illegal about it either.
     
  10. xpower180 macrumors regular

    xpower180

    Joined:
    Jan 23, 2011
    Location:
    UK
    #10
    Thanks.


    Cheers, Jay.
    Sent from my iPad 2
     
  11. Daniel97 thread starter macrumors 6502a

    Joined:
    Mar 6, 2011
    #11
    Right - so let me get this right ..

    when Lion is released .. download it and save it to an external HD on a separate partition to the CCC.

    Boot up MBP - disk utility to wipe the HD and then clean install Lion?

    EIther way - which folders from the CCC do i need?
     
  12. stefan1975 macrumors 6502a

    Joined:
    Apr 15, 2010
    #12
    that would work, although i personally think the dvd option is easier. as far as the backup goes you're on your own, i keep all my stuff in the cloud and won't be restoring anything.
     
  13. RobT macrumors 6502a

    RobT

    Joined:
    Dec 20, 2007
    Location:
    Ohio, USA
    #13
    When Lion is released, buy it on the app store and the installer will download and be placed on your dock. BACK UP THE INSTALLER FILE before anything else. In other words, when you run the installer (as in if you were doing the upgrade from SL to Lion, the installer will install Lion but then at the end delete itself (the installer app is no longer on your system when you do the upgrade.

    To do a clean install, use SL to buy and download the Lion app installer but don't run it, just follow the instructions here: http://osxdaily.com/2011/06/08/create-burn-bootable-mac-os-x-lion-install-disc/ to create a DVD to do a clean Lion install.
     
  14. fredsarran, Jul 19, 2011
    Last edited: Jul 19, 2011

    fredsarran macrumors 6502

    fredsarran

    Joined:
    Jun 15, 2008
    #14
    Instead of making a Lion bootable disc, is it possible to make a USB stick/key bootable ? Possible to be detected and select it at the boot screen of the Mac ?

    UPDATE : OK don't bother, I found this link that resolve my questions :)
    http://osxdaily.com/2011/07/08/make-a-bootable-mac-os-x-10-7-lion-installer-from-a-usb-flash-drive/
     

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