I have MacBook Pro (14-inch, 2021) 16 GB and am running Monterey 12.2
I have an external LaCie 4TB rugged hdd as Time Machine backup, which works nicely most of the time.
But from time to time, the hdd disconnects randomly, and I get the messge that I should unmount before disconnecting. The hdd is not in the Disk Utility anymore, and when I disconnect the USB 3 cable, connect it again, it works (after some waiting, peesumibly checking the fs). Happens on all three USB C ports and using different cables, one an Apple thunderbolt cable.
Any suggestions? I aam not to keen on wiping my time machine backups anr re-format as APFS…
OK - I’ll observe it (but after connected to a CalDigit hub, no dosconnects so far for 6 hours), but I am quite sure I had to physically unplug the drive and plug it back in to get it back.
I have seen this on an older Mac Mini on Mojave 10.14.6 - happens every few months - and it looks like the drive is connected when I later see the message. Odd…
I’ve had this issue with Time Machine drives directly connected to multiple iMacs, and connected through a hub to a MBP, all running up to Catalina and earlier (I haven’t upgraded my machines beyond that yet, yikes). I have a recurring OF task to “check iMac Time Machine” every 2 weeks. My MBP gets unplugged and replugged in enough that I don’t need to go out of my way to check it, but not infrequently the Time Machine drive will simply not mount and not even show up under Disk Utility.
Quick follow up: which drives are the ones disconnecting? We have two drives 2.5" (two WD, one LaCie) and only the LaCie is disconecting - OK - the WD was connected to the hub via USB A connector, the LaCie via USB C.