iMac Pro ejects external drives

IainD

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I think this may be a permanent state! Every time my iMac Pro sleeps, when I wake it up I get the message that some or all my external drives have been ejected wrongly.

I think this is very bad for the drives (is that so?)

I am running Sonoma, but it happened with previous OS versions as well.

If I set the drives not to sleep, I can imagine excessive wear and heat production.

I would welcome advice thank you!

I
 
I think this may be a permanent state! Every time my iMac Pro sleeps, when I wake it up I get the message that some or all my external drives have been ejected wrongly.

I think this is very bad for the drives (is that so?)

I am running Sonoma, but it happened with previous OS versions as well.

If I set the drives not to sleep, I can imagine excessive wear and heat production.

I would welcome advice thank you!

I
If you search, you will find threads about this on Apple's support forums, MacRumors and probably elsewhere. There is a real problem for some people, but not all by any means, and it could be what you're experiencing.

One example: https://forums.macrumors.com/threads/external-drives-keep-dismounting.2333824/

Some people have resolved this by setting their machines so the disks don't sleep, others by using Caffeine.

Preventing the drives from sleeping won't harm them. Mechanical disks are more likely to experience damage when powering up/down, and if they're not seeking, they shouldn't get hot.

The disconnects could damage the disks' file systems if there were a write in progress or a cache not flushed at the time. Unlikely if the computer is sleeping, but possible.
 
I think this may be a permanent state! Every time my iMac Pro sleeps, when I wake it up I get the message that some or all my external drives have been ejected wrongly.
I read that this bug was introduced into Big Sur and Apple has still not fixed it. It happens to me too. See this:

https://www.dpreview.com/forums/post/67342603
I think this is very bad for the drives (is that so?)

I am running Sonoma, but it happened with previous OS versions as well.

If I set the drives not to sleep, I can imagine excessive wear and heat production.

I would welcome advice thank you!

I
 
Years ago I decided to only power-up my external drives when they are actually in use. . . I had considered the pro-and-con arguments, including the possible wear-and-tear on mechanical drives. It makes more sense to me than running them constantly, which in many cases would equate to 24/7 operation.

I do not allow the external drive to sleep when the display is off (for over 20 years now).

I got my first Mac in 1997. I have had two G4 iBook HDDs fail, the second one lasting a little over two hours after it replaced the other bad drive. A Samsung SSD bit the dust after around 3 years in a 13" Intel MBP.

My oldest external drives are two Samsung HDDs. They will turn 11 years old next month.
 
I don't put mounted volumes on my desktop. . . I do not like clutter or distractions, so I access my drives via the Finder window sidebar.

Semulov (Volumes, get it?) is for basic volume management via the Finder Menu Bar. I wouldn't want to be without it.
 
I've spoken directly to apple several times and here's the deal...

In their infinite wisdom to conserve power this is how their systems are setup. You probably come back your machine with 6-12 warnings your disc was ejected improperly.

The only "solution" i've found is to use an app called disksomnia. All it does is write a small line of code to your external drive at set intervals to keep it awake. You can tell it to stay awake when certain apps are running.

It was so bad that running adobe premiere was almost impossible to get work done, if you sat idle for too long, the external would spin down-not eject but power down causing 10-30 seconds delay over and over. Also, if you wanted to run something and walk away for a few hours you'd come back to the improper ejection screens again.

So in an effort to save power I am now using MORE power in order to keep my drives from sleeping. And for whatever reason, they won't just sleep, they will unmount/remount. Apple told me it's up to ME to figure out which drives could 'potentially' not do this, potentially... Like how the heck am I supposed to test drives???
 
I think this may be a permanent state! Every time my iMac Pro sleeps, when I wake it up I get the message that some or all my external drives have been ejected wrongly.
I read that this bug was introduced into Big Sur and Apple has still not fixed it. It happens to me too. See this:

https://www.dpreview.com/forums/post/67342603
I think this is very bad for the drives (is that so?)

I am running Sonoma, but it happened with previous OS versions as well.

If I set the drives not to sleep, I can imagine excessive wear and heat production.

I would welcome advice thank you!

I
Oh, no, this predates Big Sur by a long time.

FWIW, my solution has been to set Display & Screen Saver > Hot Corners to Put Display to Sleep when I move my cursor to the bottom right corner, and to check the box for "Prevent computer from sleeping automatically when the display is off". When I walk away from my Mac for a while, I put the display(s) to sleep by moving the cursor to the bottom right corner. My drives never go to sleep, and, apparently, neither does my Mac. No more "ejected" warnings. I schedule my Mac to shut down at bed time and start up in the morning. I'm not particularly concerned about drive wear, since they're idle, and I'm not concerned about my Mac's idle power consumption because, well, it's an M1 Mac mini, which has a very small power draw, probably less than my displays.

Also, I used to think this was a USB thing, but it affects my TB2 RAID boxes, too.

--
Event professional for 20+ years, travel & landscape enthusiast for 30+.
http://jacquescornell.photography
http://happening.photos
 
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I've spoken directly to apple several times and here's the deal...

In their infinite wisdom to conserve power this is how their systems are setup. You probably come back your machine with 6-12 warnings your disc was ejected improperly.

The only "solution" i've found is to use an app called disksomnia. All it does is write a small line of code to your external drive at set intervals to keep it awake. You can tell it to stay awake when certain apps are running.

It was so bad that running adobe premiere was almost impossible to get work done, if you sat idle for too long, the external would spin down-not eject but power down causing 10-30 seconds delay over and over. Also, if you wanted to run something and walk away for a few hours you'd come back to the improper ejection screens again.

So in an effort to save power I am now using MORE power in order to keep my drives from sleeping. And for whatever reason, they won't just sleep, they will unmount/remount. Apple told me it's up to ME to figure out which drives could 'potentially' not do this, potentially... Like how the heck am I supposed to test drives???
Not very helpful of Apple at all! Apple stuff is supposed to “just work!”

thank you!
 
I've been dealing with this issue only since upgrading from a 32-bit mac pro to an M2 mini. The mini has a Sonnettech dock which connects a 4-bay drive as well as a separate SSD enclosure.

How do you guys handle the dock being "disconnected" after the machine sleeps?
 
Yeah, total freakin joke. Several 'tech experts' from apple told me its up to ME to figure out which drives 'may' not eject to go to sleep. They refuse to explain any way around this. It's maddening.

I've spoken directly to apple several times and here's the deal...

In their infinite wisdom to conserve power this is how their systems are setup. You probably come back your machine with 6-12 warnings your disc was ejected improperly.

The only "solution" i've found is to use an app called disksomnia. All it does is write a small line of code to your external drive at set intervals to keep it awake. You can tell it to stay awake when certain apps are running.

It was so bad that running adobe premiere was almost impossible to get work done, if you sat idle for too long, the external would spin down-not eject but power down causing 10-30 seconds delay over and over. Also, if you wanted to run something and walk away for a few hours you'd come back to the improper ejection screens again.

So in an effort to save power I am now using MORE power in order to keep my drives from sleeping. And for whatever reason, they won't just sleep, they will unmount/remount. Apple told me it's up to ME to figure out which drives could 'potentially' not do this, potentially... Like how the heck am I supposed to test drives???
Not very helpful of Apple at all! Apple stuff is supposed to “just work!”

thank you!
 
Yeah, total freakin joke. Several 'tech experts' from apple told me its up to ME to figure out which drives 'may' not eject to go to sleep. They refuse to explain any way around this. It's maddening.
It is the Apple Tax again, its wide acceptance, and tendency for people to excuse bugs:

https://www.dpreview.com/forums/post/67340972

Apple Tax: You accept basic MacOS bugs that Apple never fixes, you accept that some software such as LrC acts sort of clunky, and, of course, you accept that you pay high prices. You just accept that lots of things do not work or do not work well and that is the price you pay to have a computer that "just works."

It is a shame though because Apple is the richest corporation in the world. Apple knows most of their users do not care about bugs, I suppose, and Adobe knows that their LrC Mac users therefore also do not care, I suppose (and maybe do not know LrC Windows is somewhat less clunky).

I was a software engineer for a few decades so I am not very forgiving of longstanding, basic bugs that do not get fixed. I never produced products that way. It is shameful.

And on forums there are always the apologists for big corporations (Apple, Sony, etc.) grasping at straws about why the bugs are either okay, understandable, or how we should just keep our mouths shut about them. They make excuses for the bugs/problems and give cover for Apple to never fix them.
I've spoken directly to apple several times and here's the deal...

In their infinite wisdom to conserve power this is how their systems are setup. You probably come back your machine with 6-12 warnings your disc was ejected improperly.

The only "solution" i've found is to use an app called disksomnia. All it does is write a small line of code to your external drive at set intervals to keep it awake. You can tell it to stay awake when certain apps are running.

It was so bad that running adobe premiere was almost impossible to get work done, if you sat idle for too long, the external would spin down-not eject but power down causing 10-30 seconds delay over and over. Also, if you wanted to run something and walk away for a few hours you'd come back to the improper ejection screens again.

So in an effort to save power I am now using MORE power in order to keep my drives from sleeping. And for whatever reason, they won't just sleep, they will unmount/remount. Apple told me it's up to ME to figure out which drives could 'potentially' not do this, potentially... Like how the heck am I supposed to test drives???
Not very helpful of Apple at all! Apple stuff is supposed to “just work!”

thank you!
 
Yeah, total freakin joke. Several 'tech experts' from apple told me its up to ME to figure out which drives 'may' not eject to go to sleep. They refuse to explain any way around this. It's maddening.
It is the Apple Tax again, its wide acceptance, and tendency for people to excuse bugs:

https://www.dpreview.com/forums/post/67340972

Apple Tax: You accept basic MacOS bugs that Apple never fixes, you accept that some software such as LrC acts sort of clunky, and, of course, you accept that you pay high prices. You just accept that lots of things do not work or do not work well and that is the price you pay to have a computer that "just works."

It is a shame though because Apple is the richest corporation in the world. Apple knows most of their users do not care about bugs, I suppose, and Adobe knows that their LrC Mac users therefore also do not care, I suppose (and maybe do not know LrC Windows is somewhat less clunky).

I was a software engineer for a few decades so I am not very forgiving of longstanding, basic bugs that do not get fixed. I never produced products that way. It is shameful.

And on forums there are always the apologists for big corporations (Apple, Sony, etc.) grasping at straws about why the bugs are either okay, understandable, or how we should just keep our mouths shut about them. They make excuses for the bugs/problems and give cover for Apple to never fix them.
I've spoken directly to apple several times and here's the deal...

In their infinite wisdom to conserve power this is how their systems are setup. You probably come back your machine with 6-12 warnings your disc was ejected improperly.

The only "solution" i've found is to use an app called disksomnia. All it does is write a small line of code to your external drive at set intervals to keep it awake. You can tell it to stay awake when certain apps are running.

It was so bad that running adobe premiere was almost impossible to get work done, if you sat idle for too long, the external would spin down-not eject but power down causing 10-30 seconds delay over and over. Also, if you wanted to run something and walk away for a few hours you'd come back to the improper ejection screens again.

So in an effort to save power I am now using MORE power in order to keep my drives from sleeping. And for whatever reason, they won't just sleep, they will unmount/remount. Apple told me it's up to ME to figure out which drives could 'potentially' not do this, potentially... Like how the heck am I supposed to test drives???
Not very helpful of Apple at all! Apple stuff is supposed to “just work!”

thank you!
I am often surprised by the gaps in service left by Apple. I am in the ecosystem now and it would be impossible for me to change, but I get frustrated from time to time!!

I may just need to turn my computer off when I am not using it. Maybe I should do that anyway.
 
The problem is, for me several fold.

1) When using something like premiere, the external would go to sleep whenever it felt like it, sometimes within 30 seconds, sometimes several minutes. So in order to be efficient I have to keep it awake with Disksomnia.

2) If i want to perform an export operation and not sit and wait, I have to keep the drive awake. Same goes for a long operation in Lightroom, importing new files or exporting files. If I walk away, the drive would un/remount over and over.

Apple will not address this issue. Call them, you'll get a different story from different tech support all ending with 'make a genius bar appointment'. Really? I'm supposed to pack up my entire system and go to an apple store-which in my case turns into an entire day of driving.
 
The problem is, for me several fold.

1) When using something like premiere, the external would go to sleep whenever it felt like it, sometimes within 30 seconds, sometimes several minutes. So in order to be efficient I have to keep it awake with Disksomnia.
Pretty sure that's the drive manufacturer's choice. Probably nothing you can do about it other than get a different drive. My LaCie drives don't do that.

Unless you have macOS Energy Saver prefs set to sleep the Mac after a very short period of inactivity.
2) If i want to perform an export operation and not sit and wait, I have to keep the drive awake. Same goes for a long operation in Lightroom, importing new files or exporting files. If I walk away, the drive would un/remount over and over.
Sounds like your drive has "power-saving" circuitry built-in. Boo hiss.
Apple will not address this issue.
It's likely not Apple's issue.
Call them, you'll get a different story from different tech support all ending with 'make a genius bar appointment'. Really? I'm supposed to pack up my entire system and go to an apple store-which in my case turns into an entire day of driving.
Try a different brand of drive.

Now, I did have an issue with drives disconnecting after the Mac went to sleep for a while. Simple solution, though: Just check the box "Prevent computer from sleeping automatically when the display is off" in Energy Saver prefs. Under Desktop & Screen Savers prefs, I set a hot corner to sleep the displays, but it doesn't sleep my Mac mini, and the drives stay connected.

--
Event professional for 20+ years, travel & landscape enthusiast for 30+.
http://jacquescornell.photography
http://happening.photos
 
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I think this may be a permanent state! Every time my iMac Pro sleeps, when I wake it up I get the message that some or all my external drives have been ejected wrongly.

I think this is very bad for the drives (is that so?)
I don't think so unless the external drive is being actively written to which is unlikely. Not to worry.
I am running Sonoma, but it happened with previous OS versions as well.
I experience this with Sonoma 14.1.1 and Sonoma 14.2 [beta] and previous OS'.
If I set the drives not to sleep, I can imagine excessive wear and heat production.

I would welcome advice thank you!
It could be a dock issue. In this and other threads about this same issue, of external drives including external devices such as monitors and DVD burner/readers being disconnected, {BenQ 24") , I found the culprit to be the connection to the dock and the computer (or cable into dock). The issue seems to be frustratingly random and hard to track down. One day it works and in a couple of days the monitor will not -no matter what- connect. Is it the cable or the connection to the dock? but the external DVD player/burner is connected fine.

(ie.) There was a power outage for a few hours and when the power came on . . . both DVD burner and monitor were now connected ! (they were not able to connect before the power failure) . . . until they weren't! I then disconnected the power cable to dock and reconnected it and all devices were connected again.

The question I have which model of dock should I replace this one with?
 
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NONE of the issues I mentioned were happening until my system updated to a newer OS. Never had the problem on my previous laptop or iMac, nor my Mac Studio until the update. Is what it is...

The problem is, for me several fold.

1) When using something like premiere, the external would go to sleep whenever it felt like it, sometimes within 30 seconds, sometimes several minutes. So in order to be efficient I have to keep it awake with Disksomnia.
Pretty sure that's the drive manufacturer's choice. Probably nothing you can do about it other than get a different drive. My LaCie drives don't do that.

Unless you have macOS Energy Saver prefs set to sleep the Mac after a very short period of inactivity.
2) If i want to perform an export operation and not sit and wait, I have to keep the drive awake. Same goes for a long operation in Lightroom, importing new files or exporting files. If I walk away, the drive would un/remount over and over.
Sounds like your drive has "power-saving" circuitry built-in. Boo hiss.
Apple will not address this issue.
It's likely not Apple's issue.
Call them, you'll get a different story from different tech support all ending with 'make a genius bar appointment'. Really? I'm supposed to pack up my entire system and go to an apple store-which in my case turns into an entire day of driving.
Try a different brand of drive.

Now, I did have an issue with drives disconnecting after the Mac went to sleep for a while. Simple solution, though: Just check the box "Prevent computer from sleeping automatically when the display is off" in Energy Saver prefs. Under Desktop & Screen Savers prefs, I set a hot corner to sleep the displays, but it doesn't sleep my Mac mini, and the drives stay connected.
 
NONE of the issues I mentioned were happening until my system updated to a newer OS. Never had the problem on my previous laptop or iMac, nor my Mac Studio until the update. Is what it is...
OK, well, that's officially weird. Maybe a drive failure simply coincided with the update? Or does that drive continue to work fine with other Macs?
The problem is, for me several fold.

1) When using something like premiere, the external would go to sleep whenever it felt like it, sometimes within 30 seconds, sometimes several minutes. So in order to be efficient I have to keep it awake with Disksomnia.
Pretty sure that's the drive manufacturer's choice. Probably nothing you can do about it other than get a different drive. My LaCie drives don't do that.

Unless you have macOS Energy Saver prefs set to sleep the Mac after a very short period of inactivity.
2) If i want to perform an export operation and not sit and wait, I have to keep the drive awake. Same goes for a long operation in Lightroom, importing new files or exporting files. If I walk away, the drive would un/remount over and over.
Sounds like your drive has "power-saving" circuitry built-in. Boo hiss.
Apple will not address this issue.
It's likely not Apple's issue.
Call them, you'll get a different story from different tech support all ending with 'make a genius bar appointment'. Really? I'm supposed to pack up my entire system and go to an apple store-which in my case turns into an entire day of driving.
Try a different brand of drive.

Now, I did have an issue with drives disconnecting after the Mac went to sleep for a while. Simple solution, though: Just check the box "Prevent computer from sleeping automatically when the display is off" in Energy Saver prefs. Under Desktop & Screen Savers prefs, I set a hot corner to sleep the displays, but it doesn't sleep my Mac mini, and the drives stay connected.
--
Event professional for 20+ years, travel & landscape enthusiast for 30+.
http://jacquescornell.photography
http://happening.photos
 
Last edited:

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