I’ve heard of problems where BIAB expects an external drive to be a specific drive letter. If you have another drive added sometimes (but not all of the time) it causes the system to reassign drive letters and BIAB doesn’t find the one you want it to find. The solution is to reassign the BIAB drive letter in Windows. I make my external drive R (for the RealTracks that are on it). Even if Windows reassigns drive letters, it will never get that high.


BIAB 2026 Win Audiophile. Software: Fender Studio One 8, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Fender Quantom HD8 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.