I have a Mid 2010 iMac i7 processor and it is impossible run the Catalina version. When I upgrade to 10.13.6 of High Sierra and a serie of APPs are incompatible. Then I suggest Install late version of High Sierra OR install a virtual version of the Catalina, if that second option it is possible. What I feel: I have a very good iMac and I do not want throw it in the trash.