How to use an old iMac as an external display for a MacBook via wifi? - Ask Different
Still using a 2009 MacBook Pro, should I upgrade to the new M2 macs? : r/macbookpro
SUCCESS - MacBook Pro mid-2009 (5,3). The DosDude Catalina Patcher worked perfectly, very first try. The Core 2 Duo runs Catalina better than I expected. : r/CatalinaPatcher