I'm seeing rumblings that I'm not the only one here...mid-2015 MBP and upgraded to Monterey and immediately after upgrade my external USB drive (Time Machine) and SD card (in the lost) periodically unmount themselves, give a warning and then randomly remount. This makes these external storages unusable- Time Machine won't even engage in the updated, current state.
MacBook Pro 15″, macOS 12.0
I have no explanation for the differences in cables, I followed a suggested remedy that worked for me. Another user suggested trying certified USB cables. I looked at what was shipped with the drives (LaCie and WD), they had the correct stamping and labeling that indicates that they were certified. However, I bought two new cables, nothing fancy (Amazon basics and some other vendor called Plugable) with the USB-IF certification (like the old ones). I haven’t had a mounting problem since. My M1 mini seems to have delayed mounting, but they do mount reliably. Intel Mini 2018 i7 seems to be more consistent.
I'll copy and paste below for your benefit:
“Q: External Drives in Monterey”
Hope that clears it up.
(See how that sound like I’m being a ____?)
And immediately everyone unsubscribes because of the arguments. Well done killing the thread.
Now on my 2019 27" iMac the SD card will not even be recognized after going to 12.2.1. Only readable through an external hub. Was fine prior to the last update. I reported this to Apple.
I blindly tried musota's Terminal command (desperation I guess) and I haven't had a problem with my Seagates since. I'm a happy, though ignorant, bunny. Thank you musota.
Oh no. Looks likke I celebrated too soon. It's started to happen again…
Lawrence Finch wrote:
on a MacBook, System Preferences, Battery.
Thanks. Couldn't find it on my 14" M1 Macbook Pro until I plugged in a drive and reopened Preferences.
I did see your post, Oliver, and thanks for that. Frankly, though, after buying the Apple branded USB-C to USB-C cable (not the charger, the one with decent transfer rates) and still not being able to mount the drive, I may just set the drive aside for a while, see if they address a fix in the next Monterey iteration. If not, I’m definitely going to try your fix. Everything is still wrecking well, and transfer rates remain decent?
Oliver Jobson wrote:
See my earlier post in this thread about different cables. Would be interested to know if that solves the issue for you?
My experience is the same as described by Perryb, working with a card in the SD slot. This was not a problem until I switched to Monterey.
I’m going to try disabling the post-sleep authentication requirement as a workaround. But leaving that disabled is not a satisfactory long-term condition for me.
I am not sure whether I would bother, mate. Seemed to be better in 12.0x with it turned off, but it's back in 12.1, though not regularly. Sometimes I'll get 5 notifications a day, many days nothing.
With the new hyper-restricted kernel and system, Apple cannot blame extensions for this cr@p, it's just poor quality control.
My suspicion is something is still powering down the usb channel that the sd card uses, or the kext is being unloaded by the system, but the log files aren't giving me any clues as to what, at this moment.
Merry crimbo, one and all, and fingers crossed santa gives us a (new year's) resolution to this issue in -very- early 2022!
I have same issue. External drives taking ages to be recognized since installing Monterey a few days ago on mid 2019 MacBook Pro. Data is everything without it we can not work. Apple please fix this.
Merry Christmas & Happy New Year community.
tumbledry65 wrote: "...Apple please fix this."
Again, although Apple administers these communities, that doesn't include reading each of thousands of daily posts for possible feedback. However, Apple will "read all feedback carefully" here:
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I’ve upgraded my 2015 MBP to a 1TB NVME SSD. Was a last resort, but my SD card slot kept disconnecting. I now have no need for the extra storage. Might be an option for those with older MacBooks using the SD card slot as additional storage.
I replaced the drive that was causing issues and haven't had any more problems. The drive in question is fine, and works on other machines, but it was easier for me to replace the drive for $79 than to try and troubleshoot this issue.
this ain't my first rodeo, brother. Did I mention 30 years?
Though, to be completely honest, no, I haven't booted into safe mode, as there is little else can be done on the mac in that mode, and as it is, the random mounts and unmounts are...Erm...random, and can occur multiple times a day, or not happen for a few days. This has not occurred in high sierra, the little time I dabbled in 10.14, or big sur.
It is on a 'clean' system, ie not upgraded from an earlier one.
If it were only me, I would assume something I had running, but as I say, it's pretty clean with no system-level malfeasance. As you correctly point out, a guest/new user account should put any user-level additions to bed, but they do not. It's a system-level flaw. NOTHING should be forcing an unmounted sd card to mount without user input, *nothing*, and that's forgetting the forced-unclean-ejecting of media.
It isn't just me, and it isn't a user-issue.
The problem with the trackpad and screensaver were solved, now let's see if the SD card will still be ejecting.
External Drives in Monterey
