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Version actuelle par : Dan ,

Texte:

Go into Disk Utility > Disk First Aid select your external USB drive did it find a problem?
 
After you’ve copied off the data on the USB drive go into Disk Utility again and this time reformat the drive to GUID Journaled file system afterwards see if you can then write to the drive.
 
Also what macOS are you running? And if you’ve got any antivirus apps running and if they are all upto date?
 
=== Update (04/29/2020) ===
Sadly, this is starting to sound like a PCH level problem. A rare one for sure!
 
Apple no longer offers a block diagram in many of its schematics so this is just for reference. In this series the PCH is part of the CPU package
 
[image|2078350]
 
As we can see all of the USB connections go the PCH logic! Time for a new logic board.

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Contribution d'origine par : Dan ,

Texte:

Go into Disk Utility > Disk First Aid select your external USB drive did it find a problem?

After you’ve copied off the data on the USB drive go into Disk Utility again and this time reformat the drive to GUID Journaled file system afterwards see if you can then write to the drive.

Also what macOS are you running? And if you’ve got any antivirus apps running and if they are all upto date?

Statut:

open