With Monterey update, can't see certain hard drives

After updating this morning, I can't see certain G-drive hard drives on my MacBook pro. Some that I formatted over a year ago are fine. The two new most recent ones won't appear. I have checked that the finder show all hard drives. Disk utility doesn't seem them either. However, when I plug them into another MacBook pro that hasn't been upgraded they appear in the finder. What should I do?


Thanks!

Posted on Oct 26, 2021 3:05 PM

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Posted on Dec 7, 2021 3:11 PM

I can also confirm that using the apple branded usb-c to usb-c (the one used to charge the ipad or macbooks) work to access my external drives. But to clarify, to this not all cords are created equal mantra in the comments. This is true, not all cords are created equal, only the apple-branded usb-s charging cables work, not the much faster apple-branded Thunderbolt 3 cables. They do not work. They are the ones used for fast data transfer (probably like the ones that come with your external drives, non-branded) they are noticeably thicker than the charging cords. Looks like we are going to suffer slower data transfer rates until apple resolves this major issue.

158 replies

Nov 6, 2021 2:13 PM in response to pdtnyc

I'm also having this issue with my 24TB G-Raid Shuttle thunderbolt 3. I can see the G-Raid in System Information, but not in Disk Utility, Terminal, or Finder. I also discovered that this issue is only affecting my Macs that have been updated to Monterey, which I confirmed by downgrading one to Big Sur. Once downgraded the G-Raid was visible again and worked as expected.


So I spoke at length this morning with Apple tech support about the issue. After going through the obligatory "have you tried powering the unit on and off" fixes with standard tech support, they referred me to whatever the next tier of support is called (advanced?).


Anyway after I described the issue to the advanced technician, he searched through what he called "some internal tech bulletins we use" and found one confirming this is indeed a known Monterey bug. He said it appears to be only affecting some G-technology drives that connect via USB-C or thunderbolt. Lastly he apologized and said that Apple's recommendation at this point in time is to downgrade to Big Sur until a patch for Monterey is released.

Nov 8, 2021 5:39 AM in response to cdobbs

One major issue you all are not writing about is copying files from drive to drive I am getting a error message that the files cant be read or written during a copy. I can see the drives, I can see the files but during the copy I get a error message. When I try again its a 50/50 chance it will work. This is a major issue and never a problem before. This needed to be FIXED ASAP. This is not just a cable issue. WORKED ON THE OLD OS BIG SUR.

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With Monterey update, can't see certain hard drives

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