How to delete hundreds of “DISK NOT EJECTED PROPERLY” alerts?

incredulous wrote:

1. MacBook Pro (15-inch 2018) macOS Big Sur v 11.7.10

Garmin device with SD card plugged into

Brydge Stone dock for charging and updates

Overnight, apparently starting when the system went into sleep mode, the OS generated a “DISK NOT EJECTED PROPERLY” for both the Garmin device and its SD card every couple of minutes, leaving me with hundreds of alerts covering the right side of my desktop. Ironically, they even block my access to the external device, so I cannot “properly” eject it. Deleting each of these alert windows individually takes an eternity.

Is there any way to delete all of them at once?

2. Is there any way to stop these erroneous messages from being generated in the first place?

You can try holding the Option key when using the red pill button to close out similar .

Your Big Sur is current at 11.7.10

I would search your third party— If in doubt refer to the developers website; Support/Help/FAQ/known issues/compatibility /updates...

Contact a third party vendor

Contact a third-party vendor - Apple Support

incredulous wrote:

What “red pill button”? I see nothing even vaguely resembling that phrase.

Does not apply to that screenshot/message as you provide here....

If you hold the Option key and click the X it either works or it does not... in that case, click away at your x's.

You can try rebooting and see if that clears the notifications.

by comparison ref:

This is a typical example of "pass-the-buck"by Apple. This issue did not arise for me, I believe, until th last OS update. However, it seems this problem has popped up in the past with Apple systems, perusing various support pages on the Western Digital website. The support person with whom I spoke said he has had several customers with this same problem. Heck, I'd be happy if someone could tell me how to delete all the messages at once, rather than clicking on the "x" hundreds of times so I can see my entire screen!

Bus-powered drives:

When you first Mount your external drive, MacOS copies the Directory into RAM memory and marks the copy of the directory remaining on the drive as "checked out" indicating it is no longer the latest version. Then MacOS can make rapid file transfers, without having to re-write the directory on the drive after each transfer. The copy in RAM becomes the accurate copy.

Ejecting or un-Mounting the drive correctly copies RAM memory Directory back to the drive and marks it 'checked back in'. If your computer crashes or you pull out the cable before the Directory from RAM memory is "checked back in" by copying to the drive, you will later get the message "drive not ejected properly."

Many older Bus-powered drives do not elegantly fall back to the modern standard of transitioning to USB standby power while the Mac is sleeping. Because the drive is not transitioning properly, dropping its USB power means it disconnects, rather than Ejects.

When the drive reconnects, the Mac sees the drive as improperly disconnected, and you get the "drive not properly ejected" message because the Directory on the drive is "Stale" This can generally be fixed with Disk Utility repair/first-aid.

The long term fix is to provide stable external power for a drive that can not transition elegantly through computer sleep, or be prepared for trouble if the drive is left connected when the computer sleeps. Or, modify computer sleep conditions (like never sleep).