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brainwave89

macrumors 6502
Original poster
Jul 7, 2006
476
8
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.
 
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