Need help trying to create an ISO of the windows 8.1 dvd. I want to make a bootable USB stick when I go to install it to speed things up and make a backup copy. I can create the ISO using Alcohol 120 but when I use the Windows 7 USB/DVD tool to open the ISO it says it is not a valid ISO file.
Every other bit of software can read it okay so it is an ISO file as far as I can tell.
Anyone got...
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