Running Catalina without full graphics acceleration will result in extremely poor system performance. If you have a machine with one of these GPUs installed, I'd advise upgrading it if possible (can be done in 2010/2011 iMacs, iMac11,x-12,x), disabling the dedicated GPU if using a 2011 15' or 17' MacBook Pro (MacBookPro8,2/8,3, instructions to do so can be found here), or not installing Catalina. Known issues: AMD/ATI Radeon HD 5xxx and 6xxx series graphics acceleration:Ĭurrently, it is not possible to achieve full graphics acceleration under Catalina on any machines that use a Radeon HD 5xxx or 6xxx series GPU. The 2007 iMac 7,1 is compatible if the CPU is upgraded to a Penryn-based Core 2 Duo, such as a T9300. Machines that ARE NOT supported: 2006-2007 Mac Pros, iMacs, MacBook Pros, and Mac Minis:

Macmini5,x (systems with AMD Radeon HD 6xxx series GPUs will be almost unusable when running Catalina.).Late-2008 or newer MacBook Air or Aluminum Unibody MacBook:Įarly-2009 or newer Mac Mini or white MacBook: If you’re considering skipping Catalina, keep in mind that Apple typically releases major security updates to the two prior MacOS releases, suggesting that MacOS Mojave and MacOS High Sierra will likely still receive critical security updates, even now that Catalina has been made available. iMac12,x (systems with AMD Radeon HD 5xxx and 6xxx series GPUs will be almost unusable when running Catalina.).iMac11,x (systems with AMD Radeon HD 5xxx and 6xxx series GPUs will be almost unusable when running Catalina.).

Early-2008 or newer Mac Pro, iMac, or MacBook Pro: When installing, ensure your system is plugged in to power, or the update will not be installed. If you have NOT previously installed High Sierra, you can download and install this package to install the latest BootROM version. If you have a machine that supports High Sierra natively, you MUST ensure you have the latest version of the system's BootROM installed. MacOS Catalina Patcher The easy way to run macOS Catalina on your Unsupported MacĮxcluding patched binary files, this repo is governed by GNU GPL v3 APFS BootROM Support:

Update from high sierra to catalina