It is helpful to know I'm not the only one whose drives are spontaneously ejecting. I've been trying different connections and it is occurring on multiple drives. Mostly USB 3.0. These are all LaCie drives and on at least one if I hookup via Firewire through Thunderbolt, it seems stable. At least one drive has become corrupt due to these issues. I hope Apple can understand that the only thing that changed was their software/hardware. This started for me after 'upgrading' to an iMac M1 and Big Sur. I remember the days when Window machines were this unpredictable, change is the only constant.
jkustak
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