I would like to use this tray to swap 3,5" disks.
https://www.amazon.de/gp/product/B00FA4IF5I/?tag=tonymacx8603-21
I enabled hotplug for the SATA port I use with this tray in the BIOS settings and installed the AppleAHCIPort kext according to griven.
https://www.hackintosh-forum.de/forum/thread/43201-catalina-10-15-und-ich10-hotplug/
Still, when there is a HDD in the tray before I start the computer, it will mount. I can deactivate it (not unmount), and reactivate it. But as soon as I use another hdd I get an error message "(com.apple.DiskManagement.disenter-Fehler -119930868.)"
Does anybody have an idea what could be the problem or expierience with hdd-trays in Catalina?
EDIT: The problem might be in the BIOS already. The drives in the slot is not shown in BIOS, but it mounts. SATA6 is always shown empty.