Originally Posted by davedbass
a. Do I need to keep the old version (2022) to validate the new installation?
No, activation of an upgrade does not require the old version to be installed or activated. As well, in your case the only older add-on in your account is the Songs & Lessons PAK, so you can simply install the 2025 UltraPAK and the add-on and you're good to go.

Originally Posted by davedbass
b. Can I install the whole program and associated files & folders on a seperate hard disk?
Yes, simply choose the desired hard drive from the installer.

Originally Posted by davedbass
c. What is the folder structure?
That's a long answer. The short version is that you don't really need to know the folder structure, as long as you don't change any of it - installing BIAB creates the correct folder structure automatically.


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