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Thumb drive not being read.

I use standard USB thumb drives on my MacBook Pro. I use an adapter. Lately, when I connect, I can't find the thumb drive in the Finder even though the adapter and thumb drive indicate they are getting power. When I remove the thumb drive, I don't get the message that I did not eject it before removing it.

MacBook Pro 13”, macOS 10.15

Posted on Nov 29, 2019 7:49 AM

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Question marked as Top-ranking reply

Posted on Nov 29, 2019 9:12 AM

I use an adapter.


What precipitated this change in behavior?


Did you try a different USB drive ?


Did you try a different adapter?


Did you try a reboot?


Did you try resetting NVRAM/PRAM http://support.apple.com/kb/ht1379


Using USB devices with your Mac - Apple Support



My suggestion would be to get a different adapter and test. Eliminate the obvious and easiest first.

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Question marked as Top-ranking reply

Nov 29, 2019 9:12 AM in response to ja1ck1

I use an adapter.


What precipitated this change in behavior?


Did you try a different USB drive ?


Did you try a different adapter?


Did you try a reboot?


Did you try resetting NVRAM/PRAM http://support.apple.com/kb/ht1379


Using USB devices with your Mac - Apple Support



My suggestion would be to get a different adapter and test. Eliminate the obvious and easiest first.

Thumb drive not being read.

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