I have no operating system on my computer. But I do have the Windows 7 installation file on my external harddrive, is it possible to load that iso file to run the windows 7 installation from my external harddrive?
migrated from stackoverflow.com Apr 8 '11 at 1:58
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You could make the exteral drive bootable (I have a bootable USB stick created from searching here on SF).
Alternately, you could set up another pc as a PXE boot server and boot from the ISO over a network.
But it will likely save you hours (if not days) of fiddling to just burn the ISO to a DVD and install from that. Not as sexy, but it has Occam's Razor going for it.