2021 M1 Mac Mini 2TB SSD connected using dock through USB/Thunderbolt port. SSD uses USB3 for data link. Constant Disk Eject warnings. So many that its way faster to restart the Mac than deal with closing all the warnings. Spent a few hours with apple support on the weekend trying all the usual things: *Ran First Aid (from Disk Utility.app) *Booted into safe mode, Ran First Aid again *Reformatted drive from APFS to ExFat *Formatted drive back to APFS *Reset SMC *Changed USB ports Nothing stopped the constant DISK NOT EJECTED PROPERLY warnings. They appear after a few minutes then keep appearing every 5 minutes or so. I had the finder open and watched the drive from the side bar, when the eject warning appears the drive does actually disappear from the finder for a second then reappears as a mounted drive. Note that the dock also has a SD card reader, this has zero issues, works as expected. SSD however, unusable. Can someone get onto a solution, please? I have no idea how to fix this. Have 4 new warnings just in the time it has taken me to type this post.