Welcome to the club, I install on the E drive too!
On previous chats a couple of suggestions have been made. As far as I can see upgrades just alter the RM exe file so I copy that from the C drive folder to my E drive folder after upgrades. Haven’t had a problem yet. Don’t mind another installation sitting idle in my C drive but try to minimise usage on my SSD C drive. The taskbar still points to my E drive but the update changes the desktop shortcut to the C drive installation so I don’t use that one.
On an earlier post ( RM11 update installing in Program files path - #19 by kfunk ) kfunk suggested an alternative;
”I don’t recall if you were on a Windows machine or not, however have you looked at using symlinks? There are more and more apps now installing to a hardcoded default folder, and I am not sure if the links will work when installing updates, my guess is that it will.
For an example (I did not test this):
Open a command prompt as administrator and type
mklink /d "C:\Program Files (x86)\RootsMagic 11" "E:\Rootsmagic"
Of course substituting you own paths as needed.”
This has only become an issue with RM11; from RM7 to RM 10 updates went where you had installed them. I’m not really happy with software dictating where I can store things on my computer.
Hope that may help.