USB key used in iMac unrecognized by any other device

Hi all, I recently encountered a problem using USB keys with my iMac 2010 10.11.3 running OSx.

My iMac will recognize UBS sticks and allow me to save documents and files for them, but when I insert into any other device (e.g. a few friend PC and Macs, professional printers to Officeworks etc.) the USB stick is not recognized and does not see the same on their system.   Then when I insert the USB in my iMac, it is recognized immediately as well as its content.

Before that, I was able to share files and documents with family, friends and clients on USB with no problems at all.

I tried a variety of different USB keys (old and new) and what is happening to all of them, whatever the brand, age, size, etc.   Is produced only for a few months and at first I was in denial and thought that it was my friend PC, but now I see that it is certainly a problem with my iMac.  He may have started happening around the same time that when I upgraded to IE Captain earlier this year.

Any ideas please?

Thank you.

eccydee

The fact that this happens with different computers suggests that the problem could be the configuration.

Go to Applications/Utilities/Disk utility. Insert your flash key and look at the settings. It may look like this:

Everything on this list must be verified. While you're there, see if your USB is correctly configured:

http://www.PCAdvisor.co.UK/how-to/storage/how-format-USB-stick-on-Mac-3434423/

Tags: Mac

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