erase hard drive and reset mac os
My imac 10.14.6 is running very slow. I think I need to erase all data and restart new again. How do I do it? How do I get the os software since there is no disc drive. Thanks
Jeff Wu
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Here you go: What to do before you sell, give away, or trade in your Mac ...
It describes all the steps for completely erasing your Mac and configuring it as if it were brand new again.
However, you're better off fixing whatever is wrong with it. If you're interested in doing that, first determine if the same symptoms occur in "Safe Mode": Use safe mode to isolate issues with your Mac. Then, restart your Mac normally. The results of that exercise might indicate whether additional troubleshooting is justified or not.