Install Windows 7 Via Bootcamp using an External USB Hard Drive?

Discussion in 'Windows, Linux & Others on the Mac' started by Doju, Oct 23, 2009.

  1. Doju macrumors 68000

    Jun 16, 2008
    Hey guys, I have the Windows 7 .iso from Microsoft, but I can't burn it to a DVD as it's too large. I do have a 1TB external HDD, though.

    Is there a way I can put the .iso on that, and when I go to set up windows it installs off the drive instead of a disk?
  2. balamw Moderator


    Staff Member

    Aug 16, 2005
    New England
    Follow one of the many guides for creating an installer thumb drive. like:

    I don't know if you can keep other stuff on the drive so 1TB might be too much.

    Which ISO did you get? Most of the ones I've seen were well under 4 GB.

  3. nicklasmp macrumors member

    Jun 21, 2012
    sry for bumping this old thread, but haven't come across any similiar. Can you make a partion on your external harddrive and use that to install windows from?

    I don't have an USB flash drive available - but have 2 external harddrives.
  4. papertigress macrumors newbie

    Jul 19, 2013
    I'm also really interested in an answer to this question. I want to Bootcamp some Windows on my Mac mini. I have a Windows .iso, an external hard drive, no CD drive & no Flash drive. I use cloud storage & I'd rather not buy a Flash drive just for this operation. They're "only $10" but I'm poor & would never use it again.

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