instal the new for mac CrystalDiskInfo 9.1.1

> I don't believe it's a configuration issue. > Hard format: The drives currently work when connected to a Windows machine, and it shows they are both currently formatted as exFat. > It doesn't appear to be device corruption, as mentioned, I tested by connecting to a Windows machine and both drives show as they should, and I can read and write with either of the drives. It is not connected to a hub but directly to the Mini, the same way it was tested on the Windows machine. > It's not a power / cable issue- I used all the same cables and cords and it connects and works correctly with a Windows machine. Most of what you've typed I addressed in my post: All appears to be fine with the external drives. Looking for suggestions of what to check and or use. I returned the 5 Bay to the Mini, unplugged the other USB drive, plugged in the 5 Bay, powered it, gave it a minute to boot, then booted the Mini. I have a friend coming Fri who offered to bring their 2014 Mini for me to test it with, but for now I have not been able to test it on another instance of OS-X. All worked as normal I am able to read and write to both HDDs. I then:Moved entire 5 Bay unit, including same USB cable, to another machine - Windows machine. Used Disk utility 'First Aid' - it returned '.First Aid process failed.'.Swapped drives into open bays (keeping same trays).

The video drive is not being read correctly, but the audio drive works as it should and I can read and write from / to the drive. Today, after a reboot, I get a notice on the Mac: ' The disk you inserted is not readable by this computer' and offers 3 options: Initialize, Ignore, and Eject. This system has been working as described for about 3 months (the HomeBridge has been working for about 3 years I recently added the 5 bay ~ 3 months ago). 1 drive is labeled audio, the other video. The HDDs in the 5 Bay are formatted as exFat. I have another external USB drive that I use for Time Machine and some basic backup. It connects via USB cable to the Mac, giving me 2 drives. I have an external 5 bay unit for my media, using 2 x 4TB WD Red+ NAS drives. I use this machine to run my home automation (HomeBridge) and as a Plex server. I know the post might seem a bit longer, but it's because I've included what I've done to resolve this myself so others who may have suggestions can see if I've done it already. Decent technical background, not a lot of OS-X experience.

Instal the new for mac CrystalDiskInfo 9.1.1