Disk getting unmounted

[pedzsan]

I usually attach my Time Machine backup before I go to bed and plug in my laptop. During the day, I carry it around.

This morning I woke up to the message that the backup had been unmounted improperly. At the time, it was mounted. It is attached via a USB-C to USB-3 cable.

So, I go through the monkey motions of doing a disk repair -- and nothing is ever wrong.

Do others have this issue? It happens to be maybe once a month or so. Perhaps rebooting the laptop prevents it but I can't be sure.

And if the volume is unmounted improperly, do you go through the pain of doing a file system check? With the Disk Utility app for the past year or so, you have to jump through hoops to do the fsck. This is an AFPS volume.

 

[MacGizmo]

It's a fairly common bug that's been plaguing macOS since BigSur when using external drives. There is nothing wrong with your drive, and you'll notice that the drive usually hasn't been unmounted at all, or if it has, it automatically re-mounts.

 

[pedzsan]

Well... I jumped through the hoops to do an FSCK and it came up bad. So I replaced it with a new disk. Typical modern fsck, if anything is bad it seems it just throws up its hands and says "Make a copy". Well, last I check -- I'm hoping things have changed -- there wasn't a way to copy time machine backups from one disk to another. Now there are snapshots so perhaps that has changed.