I don't think we really know yet about BIAB specifically. The number of files that BIAB updates then closes in the main /BB folder is very small, like 8, but there could be many in other folders if we researched it.

Wally, I have followed the precise advice you received, to put the OS and applications on the SSD, but no data. I have everything amply backed up, so I am willing to chance a drive failure. I run the Trim and diagnostic utility faithfully each week that tells me the SSD is still fine. The speed gain is too much to give up on my aging PC. I am not concerned because I have been building PCs for thirty years and teaching computer science for longer. In that time many hard drives have failed, and none of my new SSDs yet. I am careful where I save files.

But Mac has spoken, so you must follow his advice.

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.