Imac 2009 Catalina Patcher

2010 15'/17' MacBook Pro, 2010 iMac, (if equipped with a Core i5/i7) Late 2009 27' iMac: A fix has been created, but it requires OpenCore. Even if OpenCore eventually turns out to be absolutely required for these Macs, a future release of this patcher may still be helpful in providing support for these Macs' hardware.
Thanks to macOS Catalina Patcher tool, you can install the operating system on the follow Macs: Early-2008 or newer Mac Pro, iMac, or MacBook Pro Late-2008 or newer MacBook Air or Aluminum Unibody.

MacUpdate

Make your old Mac support macOS Catalina. Older Mac owners don’t have to worry. It’s not the end of the world. There’s a patch that lets you install Catalina to Macs that are not officially supported. The patch is known as DosDude Catalina Patcher. DosDude Catalina Patcher is a third-party tool, meaning Apple does not develop the tool. My late 2009 iMac has a SSD (upgraded four years ago) and it ran just fine on Catalina. Over the years it went through eight OS changes and carried along lots of legacy baggage such as 32 bit apps and hundreds of plist and other config files, slowing things down and hogging drive space. The 4.2.7 version of macOS Sierra Patcher for Mac is provided as a free download on our software library. The latest installer that can be downloaded is 26.7 MB in size. The program is included in System Tools. Our antivirus analysis shows that this Mac download is malware free. This free Mac app was originally designed by Collin Mistr.

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