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  1. #1

    Member Since
    Sep 22, 2009
    Vienna Va
    MacBook level 2
    Exclamation OSX 6 Snow leopard
    I am unable to install from the DVD as it will not allow me to install onto my Hard drive (internal). It claims that this hard drive is being used by Time Machine. That's incorrect. I went to Disk Utility and verified both disks and assigned the first HD as the main HD that i use. the second named HD Macintosh is where Time Machine is set to go to.

    I have turned Time Machine off, changed the Hard Disk to the backup HD but yet, my Mac will not allow me to install the new operating systems SNOW LEOPARD to my Mac.

    Any ideas.

    Thank you

  2. #2

    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Texas, where else?
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
    Will assume this is an Intel MacBook.

    Disconnect the external drive during the upgrade.
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  3. #3

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Fort Worth, Texas
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, El Capitan
    To add to what Bobtomay replied to you..... After getting Snow Leopard installed, rename that external hard drive to something else. Having both drives named as MacIntosh HD is a disaster waiting to happen. Rename it to "TM Backup" or something similar. You do that from Disk Utility.


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