Rastafabi's Catalina loader
READ THIS ENTIRE POST AND THE INCLUDED README FIRST!
It took me a while, but finally I managed to create a "Catalina loader", which enables you to install macOS 10.15 Catalina
on unsupported Macs with compatible hardware. It's meant for Mac Pro 4,1 & 5,1 and iMac 2010/2011 systems, which have a Metal compatible GPU. A upgraded WiFi/Bluetooth card might be necessary to have OOB support. I have not yet looked into audio, though on my Mac Pro 4,1 it works OOB. The download includes an installation guide with additional details.
It is not meant for systems without a Metal GPU or with Core2 Duo (based) CPUs.
The loader is based on
rEFInd and
OpenCore, which spoofs the Mac to be a compatible model.
View attachment 842732
Download the
Catalina loader.zip
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Some might be reminded of my old
Mavericks download enabler.
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Dual CPU Mac Pros also require to be running
non x55xx CPUs to omit audio stuttering.
Thanks @tsialex
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Questions:
The Catalina Loader is confirmed to work with the
first macOS Catalina developer beta installer (DP1).
No other installers have been tested and thus are not supported at the moment as those can potentially damage your hardware.
Yes. If your GPU is not metal compatible it will install and boot. However it’s usually not worth it.
Just about any should work. Find an old 512mb drive and you are good to go. Of course larger drives will work, too. BTW: You may also use SD-Cards, if your Mac can boot from those.
You can't. Just install it manually afterwards. There is now way to add anything, as this basically just enables you to run the legit unmodified Catalina installer.
@Starplayr apparently wrote a
little script for the Mac Pro 3,1. It should work for other Macs, too.
It seems to install and boot on 2010 & 2011 MacBooks. However you will not have any graphics acceleration natively.
I am very sorry. However there is nothing I can do. You have been warned (README) and proceeded at your own risk.
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Updates:
- Fixed large file size (60mb), due to an oversight one may part.
- Removed experimental flag causing issues.