Not to hi jack your thread, adias, but what about this, APFS? See below.
I do have a macbook pro with ssd drive, but I work with photoshop/lightroom app on the computer and all files, originals, back up, are connected via thunderbolt to standard hard drives.
Does anyone know what this means, apple's new file system, and my external files/drives? Sounds like 'high sierra' won't be compatible with my set up. But I'm not sure.
thanks...
m
Apple File System (APFS)
APFS is a new, advanced storage architecture providing an extensible foundation to support new features and future storage technologies on the Mac.
APFS brings support for the latest high-capacity storage devices and delivers enhanced performance, security and reliability.
With APFS, common operations such as copying files and directories are nearly instantaneous.
Data is protected from power outages and system crashes thanks to advanced data integrity features.
APFS currently supports every Mac with all‑flash internal storage — support for Fusion and HDD Mac systems will be available in a future update.