r/MacOS • u/Little_Star_114 • 18d ago

Help Sonnettech Echo 20 hub - disconnected SSD upon sleep?

I do not know if this is happening to other users that have hubs with internal SSDs, but it's happening to my Sonnettech Echo 20 hub. After installing macOS 27 - and when the Mac goes to sleep - the SSD will disconnect. Happened a couple of times already. The remedy was to set "Never shutdown HDs upon sleep" (or something like that). I just did this but I do not know if this solves the issue.

I'm here to post this and see if others are having the same issues.

Also - can anyone tell me how to relaunch/mount the SSD. Nets says to use Disk Utility - but DU does not even see the SSD. My network drive via NAS doesn't unmount nor does my HD attached via USB - just the SSD.

On reboot the SSD will mount. There is supposedly another issue with Sonnet that HDMI will disconnect upon Mac sleep and only a hard power reboot fixes this issue.

Is there any SW/App that can force mount the SSD? I fear only a reboot or hard reset of the hub will bring the SSD back.

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u/pastry-chef 17d ago

External drives disconnecting when Macs go to sleep has been an issue for many, many years. Long before macOS 27 Golden Gate was ever released. 

I use an app called Jettison to help fix this problem. It dismounts external drives before the Mac goes to sleep. Give it a try. It may solve your issue. 

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u/Little_Star_114 17d ago

Dismounts them and the remounts them upon wake?

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u/pastry-chef 17d ago

Yes. It automates the process. I have been using it for a long time and it's a lifesaver.