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ReInstall Lion ?

2037 Views 10 Replies Latest reply: Jun 4, 2012 7:16 AM by Shootist007 RSS
oskarito2012 Level 1 Level 1 (0 points)
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Jun 4, 2012 1:07 AM

Just brought second hand MacBook Pro Early 2011 with MAC OS X Lion . here is some stuff from old owner , is there any chance to reinstall or just reset all to get clean install of the lion like new ? (sorry for my English lol ) Thanks .

MacBook Pro, Mac OS X (10.7.3)
  • OGELTHORPE Level 7 Level 7 (22,585 points)
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    Jun 4, 2012 2:27 AM (in response to oskarito2012)

    Open DISK UTILITY>ERASE and all data will be erased from the HDD.  (read the directions)

     

    Ciao.

  • clintonfrombirmingham Level 7 Level 7 (26,800 points)
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    Jun 4, 2012 2:56 AM (in response to oskarito2012)

    As Oglethorpe said, you need to erase and do a clean install of Lion. To do so, restart your computer and hold down the Command-R keys before it restarts. Here you will be able to erase the drive, using DIsk Utility and Restore a clean Lion system. Your user profile says that you are using 10.7.3 but as the new install will be installed over the Internet (you must have access to the Internet for this to work - Lion Recovery will assist you) you'll likely be installing 10.7.4.

     

    Good luck - shout back with any questions...

     

    Clinton

  • clintonfrombirmingham Level 7 Level 7 (26,800 points)
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    Jun 4, 2012 3:43 AM (in response to oskarito2012)

    You don't need to have an installation disk - just an Internet connection. Just do the Command-R on restart and you will boot to your Recovery drive. Follow the instructions and you'll have a newly formatted drive with a fresh install of Lion.

     

    Clinton

  • Shootist007 Level 6 Level 6 (16,640 points)
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    Jun 4, 2012 4:00 AM (in response to oskarito2012)

    You have to select the Macintosh HD partition, not the whole drive.

     

    Also use the Lion Recovery Disk Assitstant program

     

    OS X Lion: About Lion Recovery Disk Assistant

     

    to create a USB thumb drive of the Recovery HD files and boot the computer from that. Then you can wipe the complete drive and reinstall Lion.

  • Shootist007 Level 6 Level 6 (16,640 points)
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    Jun 4, 2012 4:35 AM (in response to oskarito2012)

    You should be able to do it from booting the system from the Recovery HD partition included on your internel drive. But you say you can't. I suspect you are not doing it correctly. Like you are selecting the Physical disk (the top level entry in disk utility) instead of the Macintosh HD Partition.

     

    So the only option is to create the Lion Recovery HD thumb drive so you are NOT booting the system at all from the internal drive.

     

    Yes you need some type of Recovery HD system. Whether that is on your internal drive or a USB thumb drive.

     

    You may also be able to use the Lion Internet Recovery HD system. That is where the computer is started, Booted, from over the internet from the Apple servers. To do that hold down the Command+Option+r keys when the system is first starting and have the system connected to your internet router with an Ethernet cable.

  • Shootist007 Level 6 Level 6 (16,640 points)
    Currently Being Moderated
    Jun 4, 2012 7:16 AM (in response to oskarito2012)

    Did you make the Recovery HD USB stick? If so boot to it and select Reinstall Mac OS X.

    If not boot to the Recovery HD partition on your internal drive and select reinstall Mac OS X.

    If that doesn't work at boot, startup, hold down Command+r or Command+Option+r to boot from the Apple internet Recovery system then select Reinstall Mac OS X.

     

    You should have the computer connected to your internet router with an Ethernet cable before you start this.

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