OK, I'm following now. Yes, you would want to do a fresh install of your 2011 to your own new clean external drive. Then you want to install the 2015 upgrade over that.

Yes, the Setup.exe does give you an opportunity to specify the target drive. I don't know why you aren't seeing that.

The only thing I'm not sure of is if your drive is big enough. I don't know the size of the regular BIAB version; I'm working with the (much) larger audiophile version. Perhaps someone can comment if a 160 GB drive is sufficient size?

When you start fresh, I highly recommend using BB as the folder name on the root of your new drive. This is the default installation location for BIAB and it will save you having to change the name every time you update.

When you are all done and everything works, you can always manually delete the other BIAB folders on other drives as needed.



BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.