Installation question.

Discussion in 'OS X Mountain Lion (10.8)' started by Stooby Mcdoobie, Jul 21, 2012.

  1. Stooby Mcdoobie macrumors 6502a

    Stooby Mcdoobie

    Jun 26, 2012

    I'm getting a SSD soon and was planning a clean install of ML instead of cloning my HDD. I've got an external enclosure that I plan on using to format the SSD to HFS+.

    My question is: can I install ML on the SSD via the USB connection just by mounting the ML.dmg file on the Desktop? I imagine it would be no different from installing ML on a separate partiton of my internal HDD (which is the setup I'm currently running). The reason I'm asking is because I'd like to make sure the drive is bootable and works correctly before I swap it with my HDD.

    I know I could just format the drive to HFS+, then put the drive into my MBP and install the OS via USB/DVD -- this way would most likely be faster, but I'm not concerned with the amount of time and would rather not do it this way.

  2. BlueGummiBear, Jul 21, 2012
    Last edited: Jul 21, 2012

    BlueGummiBear macrumors 6502a


    Here is what you need to do.

    To add, I just did this the other night. I created the bootable ML install drive on a USB jump drive. I removed the old drive and put the new drive in. I installed the new drive and then installed a fresh copy of ML onto it. After the install process completed, I chose the option to Transfer Files and Settings from an External Drive and pointed it at my old drive that I put in an external USB enclosure.
  3. Stooby Mcdoobie thread starter macrumors 6502a

    Stooby Mcdoobie

    Jun 26, 2012
    Yeah, I figured this was the *best* way to do it. I was just wondering if the way I mentioned would work. I've already got all my stuff backed up and ready to transfer, so that will be the easy part.

    As I said, I'd like to be able to boot from the SSD before putting it in my MBP just to make sure everything is working correctly. I used the "double click" method of installing ML to a separate partition in my HDD, eliminating the need to create a USB drive installer; any reason why I wouldn't be able to do the same thing here (obviously I'll be installing it to the SSD instead of a separate HDD partition)?

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