My experience is that the entire contents of the BIAB 'main' folder must all be together, with two exceptions: RealDrums and RealTracks. Those two may even be on another drive (which is the way I have it). There will still be RealDrum and RealTrack folders in the main BIAB folder, just with a few tiny files in each that direct the program to find the actual working files in another location that you specify in the Options, Preferences, RealTracks and RealDrums dialog boxes.

ST2 and XT2 files and a few others are fairly large, but pale in comparison to the size of the RealTrack files. Placing just the RealTracks, and to a lesser extent RealDrums, in another location will drastically reduce the size of the BIAB folder.

BIAB does not have to be installed in the root of the C drive. However, the one place you must not put BIAB is in the /Program Files folder (either one of them, if you have a 64-bit OS). Messes up the rights and permissions in Windows Vista, Windows 7 or Windows 8.


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; Presonus 192 & Faderport 8, Royer 121, Slate VSX, Adam Sub8 & Neumann 120 monitors.