This is more of a memo for me than a post for the rest of you, but might be useful if you want to create a bootable USB disk from a windows box (for an example, I used it to create a windows 8 installation drive)
1. Plug in a USB device that is 4GB or bigger. 2. Find the disk number of the USB device: Open up an elevated command shell, run diskpart.exe. Within diskpart, run 'list disk'. The output will list all disks on the computer. From looking at the size, infer which one is your USB disk and note down the disk number. 3. Correctly format the USB device: Run diskpart.exe and enter the below commands one by one. select disk <disknumber of your USB disk> clean create partition primary format fs=ntfs quick label=Win764 active assign letter=Q exit Now you should see a "Q:" drive in Windows Explorer. This is your USB disk. 4. Mount the 64-bit Win7 ISO: Windows does not have a built-in ISO mount feature. So you will have to use a third-party tool. I suggest "Virtual CloneDrive". Once you have downloaded and installed Virtual Clonedrive, navigate to the folder that your ISO file is in, in Windows Explorer. Right-click on the ISO file and select "Mount". After this, all your ISO files should show up in a drive called "I:". 5. Populate the USB disk: Copy all files and folders from I: to Q:. 6. UnMount the ISO: In Explorer, navigate to the folder that has the ISO, right-click and select UnMount. 7. Boot from USB: Turn off the target computer, plug in the USB device, turn on the computer, get to the BIOS boot options (using F9 or some other key, depends on your computer), select USB boot, and you should see setup run.