Originally Posted by Kougar
One major issue with using the bootsect.exe method (and is why I didn't cover it), is that you cannot use a 64bit disc on a 32bit OS, you won't be able to execute bootsect.exe. This means almost all XP users and most Vista users could not use this method if they wish to make a 64bit USB installer of Windows 7.
Far as I know...
The boot sector is the same for both 32 and 64 bit installers.
Bootsect.exe is a 32 bit program, even on the 64 bit disks.
Have you actually tried running the one on the 64 bit disk from a 32 bit system?