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  1. #1

    Member Since
    Sep 07, 2011
    Fresh Lion Install
    My computer came with snow leopard and I downloaded Lion from the app store over it.

    I would like to format my computer and do a fresh install of Lion over it.How can I do this?Can I put the Lion on an external harddisk and boot it from there orr?

  2. #2

    BrianLachoreVPI's Avatar
    Member Since
    Feb 25, 2011
    March 2011 15" MBP 2.3GHz i7 Quad Core 8GB Ram | Mid 2011 27" iMac 3.4 GHz i7 16 GB RAM 2 TB HDD
    You can if you have the originally downloaded package from the App Store still. You'll probably need to download it again first. I'm planning to do something similar myself this evening.

  3. #3

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac i5 2.7GHz, 16GB memory, OS 10.11.1.
    And you can download it again free by holding the Option key, hitting Purchases and then the Lion icon. Burn to a thumb drive. You can put Lion on an external disk if you wish but personally use SuperDuper to backup and clone.
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  4. #4

    Member Since
    Aug 04, 2007
    There is a hidden 4GB .dmg file inside the OS X 10.7 application which you can use to burn a OS X DVD to boot from.

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