...As you can see, no System Reserved partition is created. Win7 assumes a dual boot system and modifies the boot manager accordingly on the internal drive. The removable drive's Win7 install cannot operate alone.
I see, thanks for posting the figures. I believe the "System Reserved" partition is causing your problems. I kind of forgot about that since I never allow Windows 7 to create it in the first place, as it overly complicates things and serves no useful purpose for most people (you really only need it if you use BitLocker).
There are several ways to avoid creating the System Reserved partition when installing Windows 7 or later, I normally use "method 3" as shown here
, since it can be done during the installation with no advance preparation.
If you don't want to reinstall Windows without the System Reserved partition on the internal drive, you can remove it after the fact by following these instructions
Installing Windows without the System Reserved partitions on either the internal or external should allow you to install Windows on the external drive without having to disconnect the internal. The end result should be single Primary partitions on both drives that are independently bootable.
Scott, thank you for the prompt reply. I am honored to connect with you. Your Upgrading and Repairing PCs is the text for my class and the "bible" for PC tech reference.
Thanks for the kind words! I am honored that you are using my book in your classes, I really appreciate that! Scott.