Creating a partitian for Windows (via Disk Utility)

Discussion in 'Windows, Linux & Others on the Mac' started by ColourCrisis, Dec 26, 2011.

  1. ColourCrisis macrumors newbie

    Joined:
    Dec 26, 2011
    #1
    Hi,

    I installed windows 7 to a USB. But I keep getting "missing operating system" on boot...

    I think this is a partitian fault, because on Lion the Boot Camp assistant didn't ask me to partitian the drive.

    So I want to do it manually.

    Can someone tell me how I can manually partician 20GB for a Windows 7 OS?
    and what format?? Free space? or MS-DOS (FAT) ?

    Thanks!!
     
  2. Intell macrumors P6

    Intell

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  3. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #3
    Windows can't be easily booted from an external device, if "USB" alludes to a USB flash memory thumb drive or external HDD connected via USB.
    There may be a workaround, use the www search engine of your choice to maybe found a guide or two.
    For partitioning your internal HDD for Windows use, you need to use Boot Camp Assistant, not Disk Utility.
     
  4. ColourCrisis thread starter macrumors newbie

    Joined:
    Dec 26, 2011
    #4
    Yup, using microsoft's usb backup tool.

    I did it all from a youtube tutorial, but I just got a "missing operating system". I think the reason why is because the guy in the video was using Leopard, and i'm on a Lion... Bootcamp has since changed.

    Bootcamp assistant didn't prompt me to partition... so that's why i'm asking how to do it via Disk Utility...
     
  5. balamw Moderator

    balamw

    Staff Member

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    New England
    #5
    Link please.

    B
     
  6. ColourCrisis thread starter macrumors newbie

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    Dec 26, 2011
  7. balamw Moderator

    balamw

    Staff Member

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    Location:
    New England
    #7
    Thanks. Installing with/from a USB drive vs. installing to a USB drive. One works (sometimes) the other much more rarely.

    Unfortunately not all Macs will boot the W7 installer this way. Which specific model is your Mac?

    B
     
  8. ColourCrisis thread starter macrumors newbie

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    Dec 26, 2011
    #8
    2011 Macbook pro 15"

    I think you might be right about this... the person on the video was using a MBA.
     
  9. balamw Moderator

    balamw

    Staff Member

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    Location:
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    #9
  10. ColourCrisis thread starter macrumors newbie

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    Dec 26, 2011
    #10
    Can I reformat my USB, and paste the windows 7 ISO? do you think it will boot that way?
     

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