M1 MacBook Pro "Disk Not Ejected Properly" several times during sleep

I have the same problem as described in M1 MacBook Pro "Disk Not Ejected Properly… - Apple Community

with a new Mac Book Pro M1 (14 inch 2021, macOS 12.4) and a Samsung external USB-C drive.

I have the disk directly connected (not through a hub or dock).

The disk (time machine backup disk) is ejected randomly during sleep.

Any ideas how to fix this problem?

Posted on Jul 21, 2022 02:29 AM

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2 replies

Aug 2, 2022 12:24 AM in response to wazum01

it's a bug, either hardware or software, that apple refuses to acknowledge. You can prevent your computer from sleeping via the pmset command - "sudo pmset -a sleep 0", but that may cause the internal SSD to have a shorter life span.

wazum01 Author

Level 1

4 points

Jul 21, 2022 02:30 AM in response to wazum01

I have the disk directly connected (not through a hub or dock).

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M1 MacBook Pro "Disk Not Ejected Properly" several times during sleep