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.