Chosen Solution
I’ve been on the phone with Apple support for days and no one can help me. I replaced the internal HDD drive with a solid state Samsung 870 QVO 2TB. This iMac had a fusion drive set up with a 128 gig internal drive attached to motherboard. I loaded operating system on the new SSD drive and I’m having tons of problems. I can’t copy files from an external drive to the SSD with getting (error -36). Software installations aren’t going smoothly. HELP!!!! How do I get the Mac to just use the one internal ssd drive that I installed (SAMSUNG) and ignore the other small internal drive. I don’t want a fusion system. Just one 2tb SSD drive that I installed. Hope this makes sense. Things work fine when I install the operating system on the 128 gig internal ssd drive that’s on the motherboard. I obviously don’t want that. @danj help!!!
Go into your Systems Preferences settings open up the Startup Disk control panel you should see two drives, unlock your settings and click on your 2 TB SSD. The system should ask you to restart at that point let’s do that. Did that resolve the issue? If not the blade SSD is still set as a cache drive to your original HDD which is messing us up. Did you break the fusion drive set before you took the HDD out? Apple changed things with Catalina which has messed up quite a few people between dropping support for older 32bit apps and the retiring some API calls.
