Apple released two versions of the iMac 2009 one is the iMac (Early 2009) and the other is iMac (Late 2009). I wish to upgrade it to macOS Sierra, but it requires at-least OS X Mountain Lion 10.8 which is not available anymore in the App Store. Answer (1 of 2): It depends on which iMac 2009 you have.
MAC OS X LION UPGRADE SIERRA MAC OS X
I have a MacBook Air running Mac OS X Lion 10.7.5. You will also need Lilu.kext and Whatevergreen.kext in your EFI/Clover/kexts/Other folder to run the card. Upgrade Mac Os X Lion To Sierra 16 Janvier 2021 Rédigé par Admin et publié depuis Overblog.
Just make sure that prior to data migration, that your previous OS System/Library/Extensions and Library/Extensions folders does not have any spare injected kexts that may cause issues.
MAC OS X LION UPGRADE SIERRA INSTALL
Users can download the app via a direct link and then install it that way. This means that users that search for the installer will not find anything if they have a newer version of Mac OS. This is primarily because Apple has hidden the installer from the Mac App Store. HVEC/Intel Quicksync, you'll have to add the AAPL,ig-platform-id and device-id values too in your Devices/Properties section of Clover for the Intel GPU. The best way to download Mac OS X High Sierra is via a direct link download. AMD acceleration should work with Use only darkwake=8 and -disablegfxfirmware in the boot-args, also possibly shikigva=128. A clean vanilla install will avoid this.Īs regards to using the newer video card, it is advised to try removing all cards, boot only with the Intel making sure it works first, and then install the AMD card afterwards plus add Clover settings. And yes it is best to use the Unibeast/Multibeast USB key method for High Sierra for installation, and then migrate the data over minus the computer settings once it is complete - because upgrading the OS over a previous may one cause issues during booting of the new system (I've experienced this before). My advice would also be to do a backup of your current system including the EFI folder, before you try using the guide above. It is for a Z77 motherboard in both Sierra and confirmed to work in High Sierra, so it should work. Building a CustoMac Hackintosh: Buyer's Guide
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