External disks issues on MacOS 13.5.2 (22G91)

Hello all,


I have an issue while reading or erasing external hard drives on my MacBook Pro M1, 2020, issues I don't have on my older MacBook Pro:


Old:


New:


Here is an example of a disk I can open, read, write, execute and erase on the old Mac when I cannot do anything on the "recent" one:


On the new Mac when I see it on the side panel but i cannot open it. I get this:


And when I try to erase it from disk utilities I get that:


I also tried to format it from the terminal following the well known instructions but it failed also...

And again it happens with 3 different disks (all quite old but again they are working fine on the old Mac)


So I am lost, and need help :)


Thanks in advance,

Maxime


MacBook Pro 13″, macOS 12.6

Posted on Sep 11, 2023 1:38 PM

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Question marked as Best reply

Posted on Sep 12, 2023 5:05 AM

The below link from Apple on Erasing and External Drive


The trick is in Disk Utilities >> View >> View all Devices


Then choose the Upper Most Manufacture's Name of this drive


Erase and reformat a storage device in Disk Utility on Mac - Apple Support (CA)



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8 replies

Sep 12, 2023 6:43 AM in response to PRP_53

Well I did that some many times :(



Every single time I performed these actions, it failed.


And again I can read all the disks I tested on my old Mac but also on my Windows machine.


There is something on the computer itself that causes this issue.


I tried in recovery mode >> fail

I tried with FileVault off >> fail


I am now thinking about reseting my Mac to factory settings but guess what, I need to backup my data and I can't :D...


External disks issues on MacOS 13.5.2 (22G91)

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