Need help! Shut computer down while doing a fresh install

Discussion in 'iMac' started by vtyler98, May 18, 2013.

  1. vtyler98, May 18, 2013
    Last edited: May 18, 2013

    vtyler98 macrumors member

    Jul 27, 2011
    Hello all, I purchased a 21.5" iMac today and need some help with it. I usually do a clean install of a new computer and erased the HD as normal, but accidentally shut it down before reinstalling the OS. The problem I'm having is now when I boot up, there is no HD for the computer to boot off of since I erased it, and when I used the Mountain Lion USB drive I created for a clean install, I hold option down on startup and select the drive and it shows a circle with a line through it and powers off. On my Macbook air, which I'm posting off of, I do the same procedure and it goes through the clean install process but doesn't on my iMac. Going to an apple store isn't an option right now since the closest one is several hours away. Can someone offer some advice or options to help?

    Also, the main problem I'm having is when trying to do the clean install by holding down option, I see the drive and select it but it does the circle with the line and shuts off instead of doing like it does on my air. Any idea what could be causing this? I finally got internet recovery to start by plugging it in to our network, our wifi wouldn't show up so had to plug it in and hoping it works...
  2. Shrink, May 18, 2013
    Last edited: May 18, 2013

    Shrink macrumors G3


    Feb 26, 2011
    New England, USA
    Just a suggestion...

    If you make your title a bit more informative it will help folks know if they can help you, and you will likely get more useful information.:D
  3. thedeske macrumors 6502a

    Feb 17, 2013
    Agree - what year/model on your iMac and perhaps the Air.
  4. Bear macrumors G3

    Jul 23, 2002
    Sol III - Terra
    Use internet recovery (Command-R while powering the system up) - that should fix your issue.

    It sounds like the USB drive you have may be specific for the Air and not have the drivers the iMac needs.
  5. mmomega macrumors demi-god


    Dec 30, 2009
    DFW, TX
    What version of OS X is on the USB drive you are using? 10.8.3?
    Also which iMac are you trying to reinstall on? 2012, 2011?
  6. AppleNewton macrumors 68000


    Apr 3, 2007
    1 Finite Place
    The OS version on that drive might be older than the new iMac.
    So download the latest 10.8.3 from the App Store or use Internet Recovery and you should be fine.
  7. vtyler98 thread starter macrumors member

    Jul 27, 2011
    Alright I got it figured out everyone! I had to hook my iMac up to a cable connected to our modem because it wouldn't recognize our wifi network for some reason on internet recovery, did the internet recovery and a few hours later it is back working now :) I then proceeded to go to the app store and mac a bootable USB drive for my iMac, apparently the iMac and MBA/MBP have different drivers so now I have a USB drive for each. Tested the new USB drive I made on the iMac and it works like it should so I'm assuming that was the problem.

    Thanks for the suggestions and advice everyone, it helped a lot! I'm about to sell my MBA after getting the iMac because most of the work I do is at a desk and I don't really need the mobility of a laptop, if I do I'll just get a mini iPad or something like that.
  8. rkaufmann87 macrumors 68000


    Dec 17, 2009
    Folsom, CA

    Going forward doing a fresh install on a brand new Mac of any type is a waste of time and resources and well just not that bright. If you were upgrading to another version of OS X then it might make sense. But on a brand new machine it makes no sense what so ever.

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