This method is for installing a secondary Windows to your existing configuration. This method circumvents the original Windows installer limitation of being unable to install to external devices, BUT this guide does not specifically mention that following it will inherently made this external drive of yours a firmly needed part of your computer configuration (and that when it fails to boot or to modify your preexisting booting options, it will brick your system). As some other write, this guide is rather old and existed long before WinToUsb and other utilities existed. This method does not use booting from USB option, but makes this new Windows drive seem like an internal one.
The only thing that works right is ImageX.exe, all other lines in the installer.bat which manipulate the registry or call up DISKPART or BSDBOOT should be deleted. You will have to go online and do those by hand. ALL positive comments with smiley faces in them are OBVIOUSLY fake, I did not read any of this page before starting to do this.
I tried to use the script given here [ -nt-6x-fast-installer-install-win7-directly-to-usb-external-drive/] to enable the hard drive to be used on other computers, in order to see if it will solve boot problem, but I received a sysprep serious error.
BADLY needed clarification: you have to partition your target drive first, in disk management. first delete all partitions on your empty target drive by right clicking in diskmgmt. then create simple volume, 100 MB, NTFS, drive letter R for example (this is = system reserved aka the small sector containing boot loader for windows) and quick format. Next format the remaining large unallocated space, to K (or whatever letter other than A, B, and cant use C because the computer youre running this cmd on already has a C drive) NTFS and quick format. Then run the installer.cmd. Then the first prompt for OS partition thats where windows files will install, in my example K drive, and select R drive as the boot drive. If this method actually worked these are the steps you need but I think this guide is broken, or I cant find a solution for the life of me. wintousb doesnt work, as selecting my drive in bios afterwards it still wont boot, just crashes.
It works with 64 bit windows also. runs a little slower than having an actual HDD but surprisingly fast for a portable HDD. just follow the steps and make sure everything is good.You can also input this within the cmd window after restart and install so that you can run on any pc= 2b1af7f3a8