Backing up hackintosh for upgrade...

Does anyone know the best way to create a back up of your hackintosh before doing an upgrade? I have two SSDs in my hackintosh, one Win and on OSX Catalina. I’d like to update Catalina to .4 but want to make a full backup just in case. Any recommendations of what/how to use and also how to restore should it all go tits up.

submitted by /u/epicrumbs
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