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Download macOS Catalina or another system you want to use instead of Big Surīasically you have several options for installing another Mac operating system:
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Generally, we recommend that you always back up Mac’s data before updating and installing any new system on your computer.
#How to backup mac to icloud catalina pro#
Use MacCleaner Pro to clean up all junk stuff on a hard drive and speed up your Mac. In fact, a special software MacCleaner Pro can help you to recover valuable disk space, optimize disk usage, and fix a slow Mac performance. Generally, each new system needs more available free space for which fresh hardware is required to work smoothly. You may want to go back to macOS Catalina or older versions of the system because, after the upgrade, your Mac started to run slowly.