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Mac OSX Monterey External Hard Disks Going to Sleep

Hey all, I'm currently using a M1 MBA and recently updated to Monterey. The issue I'm facing now is my external hard disk dock is going to sleep after a minute of inactivity, even when I have unchecked the "Put hard disks to sleep when possible" option in the power options.


This usually gets fixed by restarting the MBA, but every time I put the mac to sleep for awhile (operating in clamshell mode and connected to external display via Caldigit TS3+) and wake it back up, the issue pops up again.


When I head into terminal and execute "pmset -g", it shows that my disk sleep option is set to 0.


The external disk drive dock is plugged directly into my Caldigit TS3+, and the TS3+ is plugged into a thunderbolt port on the MBA.

MacBook Air 13″, macOS 12.0

Posted on Dec 5, 2021 2:23 AM

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Posted on Jan 11, 2022 3:12 AM

Same here! Incredibly frustrating. I have just found a fix however, thanks to a member on another forum on the same topic so thought I'd share here too.


There's a free app on the app store called Amphetamine. Download that, go into the preferences>Drive Alive, make sure your HDD is plugged in and check the box. It's been working for me all morning.


Hope the issue gets fixed soon but this works for now!

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146 replies

Mar 14, 2022 2:07 PM in response to Colin_Cygnet

Not sure if this is related or not, but as mentioned I also have this issue, and on Friday my G-Raid disappeared from the computer and I got the dreaded red G logo light. Had it setup raid 0 so lost 10TB of video footage. Never had an issue with this drive until I started using it with my Macbook Pro M1 Max a few days prior. I had used Amphetamine for 24 hours for the first time right up until the drive crashed. I don't think they are related, but also can't rule it out.


Backup your content!!! Lesson learned.

Mar 29, 2022 10:45 AM in response to saofrenzy

Throwing my complaint into the bucket as well. Been going back and fourth with OWC for the past two weeks to no avail. Glad I found this thread as I figured it was likely a Monterey issue. I can repeat the problem down to the 60th second in finder with my flex8 RAID 5 array, as I hear the disks power down files cannot be quickly previewed, after about 10 seconds everything reconnects. So Apples whole "third party" argument is void. Got Amphetamine running, will use as a band-aid until this get's patched.

Apr 1, 2022 9:30 AM in response to hammockma89

I've done today the last monterey update, nothing about the bug fix of the external disks that go in standby. now let's put our souls in peace, apple is not interested in solving this bug. We have to continue with third party apps like amphetamine and similar. Honestly i don't like having the hard disk icons dancing from icon image to folder all the time, it gives me the idea of instability (using amphetamine with the option to keep the disks awake every 10 seconds).

Such a shame


Apr 6, 2022 12:16 AM in response to saofrenzy

Same thing here.

MacBook Pro 16 M1Pro - connected two lacie drives through daisy chain - all settings at system preferences are selected correctly, today I made the latest update of Monterey.

This is serious. Apple.

Apple this is serious. There is almost no one in this world who's using these computers without using external drives. Expensive external drives with expensive data inside.

Apple this is serious.

It is not just a bug. It is a huge problem with huge risks.


Apr 11, 2022 9:55 PM in response to unsafe13

I'd like to add a big fat "me too" to this. I just upgraded from a 2011 iMac (running High Sierra) to a 2020 Mac Mini M1. (running Monterey) On the old iMac I had four external HDDs connected with a USB 2 hub. Yeah, slow ancient setup. But it always worked. Never had the problem described here. On the Mac Mini I have the same HDDs connected with a Sabrent powered 4-port USB 3.0 hub (connected to the USB port on the Mini). Everything was fine until the Mini went to sleep for the first time. Once the Mini woke up, the HDDs started spinning down after 30-60 seconds of inactivity. A restart of the Mini seems to fix the problem, until it sleeps and wakes up and the the problem starts again.


The Energy Saver "Put hard disks to sleep when possible" checkbox doesn't do anything. The only solution is to keep restarting the Mini every time it wakes up from sleep, or Amphetamine's "Drive Alive" feature seems to be working well (I just installed it today, but so far so good). Or I suppose I could just never let the Mini go to sleep, but that's hardly a good solution.


If it matters, all four HDDs are WD: Two Elements and two My Books. I don't use the WD software.


There are way too many people having this same problem for it to be blamed on a third party. This seems to be very much a Monterey problem.


Apr 16, 2022 5:57 AM in response to Extrverage

I'm using adobe lightroom as well. I have my catalog on one master drive (a WD elements), and two backups......All three of the drives do the same sleep/wake behavior without dismounting.....This has got to be an operating system issue......Western digital claims that they haven't heard of this problem, but the descriptions on here sound very similar to the issues that I am having which makes me think it is monterey not knowing how to play with certain drives...


For reference I have a macbook m1max with 24coregpu 64gb ram 1tb drive

Apr 16, 2022 6:49 AM in response to Frankie123456

I'm currently doing tests on my old macbook air 2015 intel with monterey (i know for certain im having issues with my macbook m1max with monterey), hooking my external drives to lightroom to observe behavior.....i have a feeling this might be a monterey and/or m1 specific issue, and might not be necessarily affecting intel macs with monterey. will report back in a bit.

Apr 16, 2022 8:09 AM in response to Frankie123456

So I ran tests with 3 external wd element desktop drives on both my intel macbook air 2015 with monterey & macbook pro 2021 M1 Max with monterey, and the behavior of powering up and down continously seems to be only happening with the M1 Max laptop.....Anyone do similar testing with older intel and new m1 computers? Right now im thinking this is a combination of a Monterey/m1 issue.



Apr 18, 2022 9:20 AM in response to saofrenzy

I JUST got my Mac Studio, and went through the setup this weekend. My OWC raid does the same thing. I have run this raid on my 2013 Mac Pro for two years without this problem. Matter of fact, my 2013 Mac Pro has a Terramaster 5 bay array on it, and it does not do this. I think it is safe to say that the problem is with the Thunderbolt/USB-C ports, in Monterey, and definitely not third party software, or what the IT people commonly refer to as "a user problem". This thread is going on 5 months now, and Apple hasn't done anything about it (that we know of). We shouldn't have to run another third party software to address what Apple says is caused by a third party software.

Apr 27, 2022 9:55 AM in response to mrhoni

I have the same setup: A new Mac Studio Ultra, and a G-Drive Pro (spinning rust).


The G-Drive is configured as an encrypted Time Machine volume, therefore macOS formatted it as APFS encrypted.


I'd expect the disk to spin down, then come up for hourly backups. However, I notice it spinning down and back up quite frequently. Sometimes it feels like every 5 or 10 minutes.


As others said, whenever this happens any operation that is iterating over the available disks freezes.


Disabling the System Preferences option to "Put drives to sleep if possible" doesn't seem to make any difference.


I tried to use Amphetamine but since the volume is not writeable by my user I can't select it.

Mac OSX Monterey External Hard Disks Going to Sleep

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