Can't read external drives

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Taylor Webb
Taylor Webb 2024-5-16
移动：Walter Roberson 2024-8-14
I receive the following error when trying to read from several external drives.
"ls: /Volumes/Samsung USB/: Operation not permitted"
I receive similar errors when trying to change to a directory on the external drive.
"Unable to change current folder to '/Volumes/Samsung USB'."
The drives are visible in Finder and on Terminal and I can read and write to the drives using other applications. I am running macOS Sonoma version 14.4.1.

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Walter Roberson
Walter Roberson 2024-5-16
System Preferences --> Privacy & Security --> Full Disk Access
Click on the "+" at the bottom middle . Authenticate. Select /Applications and the appropriate version of MATLAB within that, and click the Open button.
That might get you a message about how "MATLAB_R2024a.app" will not have full disk access until it is quit. Click to quit and restart (provided that all of your work is currently saved at the MATLAB level.)
  2 个评论
Taylor Webb
Taylor Webb 2024-5-16
Strangely, I also found that if I dragged and dropped a mat file from finder to the command window it would succesfully load and allow regular command line access afterwards.
Following these steps seemed to make it so I was able to access the disk immediately after connecting it so I won't have to go through the additional step anymore. MATLAB was already listed as enabled in Full Disk Access but it must have been pointing at an older version or something. Re-importing it into Full Disk Access seems to have done the trick.
Torben Ellegaard Lund
Torben Ellegaard Lund 2024-8-14
移动：Walter Roberson 2024-8-14
I had similar problems and tried the drag and drop on command line approach, which resolved my issues.

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