I am not quite sure what you all mean:

Do yo make backups of the install and stsore that on the external drive?
Or do you install BIAB on an external drive altogether?
Or do you store the downloads on an external drive but do the installtion on the internal drive?


Band in a Box
Latest: ULTRA 2020 (734) on Win 10
And: MEGA 2020 (720) on Windows 7