Last couple of days my external discs are disconnecting themselves.

Yesterday it was my Seagate , and just now it was my La Cie.

 

No recent updates on Mac to blame , could it possibly be the cool weather ? at the moment it is 21deg c in my computer room.

 

 

sunspots cause that.

2 minutes ago, ozimoron said:

sunspots cause that.

i don't think that is the problem today. 

When I unplug and insert again nothing shows on my desktop or disk utility .

Maybe just another bug of Monterey?

 

Googled this and it is for M1 based Macs and Big Sur. But many of Big Sur bugs migrated into Monterey and haven't been fixed. That's why I still stick to Catalina.

 

https://www.howtoisolve.com/external-hdd-ssd-drive-keeps-disconnecting-mac/

 

Not sure this will help but worth a try.

5 hours ago, NE1 said:

i don't think that is the problem today. 

When I unplug and insert again nothing shows on my desktop or disk utility .

Recheck using a different cable or two.

2 minutes ago, sometimewoodworker said:

Recheck using a different cable or two.

Two different external disks in Two diiferent ports using Two different cables in Two days

I am just waiting for tomorrow to see if it happens to the Third disc .

I have had these 3 discs plugged in for just over a year now without a problem.

Updated to Monterey when it first became available , this is the first time I have had any problems like this.

3 hours ago, NE1 said:

Two different external disks in Two diiferent ports using Two different cables in Two days

I am just waiting for tomorrow to see if it happens to the Third disc .

I have had these 3 discs plugged in for just over a year now without a problem.

Updated to Monterey when it first became available , this is the first time I have had any problems like this.

Useful to know, thanks

Have you restarted the laptop? Checked the disk utilities to see if it recognises the devices?

 

My first post states Imac.

My answer to your " Sunspots " solution ........When I unplug and insert again nothing shows on my desktop or disk utility .