Interestingly, there’s a Terminal command that Apple has enabled that allows one to disable 32 bit apps in OS 10.13.4—it doesn’t work in 10.13.3 or earlier (I tried). As one expects, BIAB doesn’t work.
How to enable 64 bit only in OS 10.13.4

Bottom line for me is that I will not upgrade my copy to the next version unless it it is 64 bit. 2017 Audiophile actually does most of what I need so there’s no desperation on my part if it’s not.

My only concern is that, if 2017 doesn’t work in the next OS, it may affect my next Mac purchase. If I buy an iMac Pro, it’s not an issue as I can boot from another SSD. If I wait for the next Mac Pro, that’s another issue.


BIAB 2024 Audiophile Mac
24Core/60CoreGPU M2 MacStudioUltra/8TB/192GB Sequoia, M1 MBAir, 2012 MBP
Digital Performer11, LogicPro, Finale27/Dorico/Encore/SmartScorePro64/Notion6 /Overture5