How do you prevent MacBook to eject external drives when on battery?

Question

How do you prevent MacBook to eject external drives when on battery?

Hi all,

I was a happy user of an old macbook pro , decided to upgrade my hardware and now I'm totally confused and frustrated with USB-C ****.

My MacBook is connected to external drives via USB-C, the drives are plugged in a hub and self-powered. When the macbook is on the battery the drives are ejected when laptop goes to power saving mode.

I know about the "Put HDD to sleep when possible" option and it's currently ON and I want to keep it on for the laptop HDD but not for external HDD obviously.

Any clue how to fix this?

Using MacOS 10.13.6

MacBook Air (2018 or later)

Posted on Jan 7, 2019 1:53 AM

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Answer 1

Jan 13, 2019 11:50 PM in response to i_rina

Hi,

Thanks for your answer, the disks are self powered so they shouldn't be impacted by the laptop standby?

Kind regards

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Answer 2

Jan 15, 2019 10:28 PM in response to c_luc9

Thanks for your answer.

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Answer 3

i_rina

Community Specialist

Jan 8, 2019 8:43 AM in response to Frustration99

Hello Frustration99,

Thank you for using Apple Support Communities! I understand that you’re concerned about your external drives being being ejected when your Mac is in Standby Mode.

Here's a resource that can help explain more:

Use the Energy Saver settings on your Mac

Specifically, the section labeled "Standby Mode" explaines that the USB busses will be powered off while in standby. This is expected behavior, and will power off your external drives.

Best Regards.

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Answer 4

c_luc9

Community Specialist

Jan 15, 2019 9:29 AM in response to Frustration99

Hello Frustration99,

Thanks for getting back to me. Your drives wil be ejected when your Mac is in standby, reguardless of how they are powered.

Regards.

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How do you prevent MacBook to eject external drives when on battery?

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