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External SSD w/ Catalina freezing up

I installed a USB 3.0 external solid state hard drive on my 27" 2012

iMac with a clean copy of Catalina. The previously internal hard drive

has not been touched. I wanted to install a SSD w/o taking apart the

iMac. Sometimes when it goes to its screen saver it freezes up.


What might be causing the freezing? Catalina itself or something else?


Thank you for looking.

Posted on Oct 28, 2019 8:43 AM

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Question marked as Top-ranking reply

Posted on Oct 28, 2019 10:01 AM

I'm running several computers with external USB 3 SSDs and I'm having zero problems. Screen savers are nice and fun but not really necessary. I'd switch screensavers and see if the problem stops.

2 replies

External SSD w/ Catalina freezing up

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