I long since moved my RealTracks to a separate drive. They take up the better part of a 2 TB drive in the audiophile version; not something I want on my C drive.

You didn't ask this, but my understanding is that as long as you use the same computer, the activation of that copy of BIAB means it will run from anywhere you install it on that computer. Andrew said you could delete the C:/BB folder, so I guess the activation files are stored elsewhere. I would have expected that C:/BB/Data/TicketsActivated folder had to remain, but I guess it's ok as long as it gets copied to another drive.

I do know there are a few other files such as the PG Music fonts that will remain on your C drive; they were never in the /BB folder. They are small, as I understand it, but it's been decades since I examined this.

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.