How to Create a Windows Installation USB DriveEdit

(The following instruction was posted by jphughan to the user forum at NotebookReview on 12 December 2013:)

You just need an ISO to build the bootable USB drive.  If you're installing 8.1, note that not all 8.1 ISOs can install either Core or Pro; some can only install one or the other, and if that's the case with yours, make sure that the ISO you're using is for the same version as your embedded product key.  Once you have the ISO, read the note below and then follow this guide to create bootable media:

NOTE: If you opt for a bootable media creation option that involves Rufus, be aware that Rufus is a bit sneaky.  Once you choose FAT32 as the drive format in order to enable the option to create bootable media, after you choose a Windows ISO, the format will automatically switch back to NTFS.  This is NOT what you want if you wish to create UEFI-compatible boot media.  However, if you select "GPT partition scheme for UEFI computer", the format will be switched back to FAT32.  The trick is that you need to make that change AFTER selecting the Windows ISO.