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<ul><li>Reason: Required to avoid Hibernation wake issues on 3rd party drives</li> <li>Logic: Patches AppleAHCIPort.kext into support</li> <li>Models: All models with standard SATA ports</li></ul></li> <li>PanicNoKextDump
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<ul><li>Reason: Avoids kext dump on kernel panics, easier kernel debugging</li> <li>Logic: Patches Kernel to not dump dump unnecessary info</li> <li>Models: Only set when Verbose Boot is enabled by the user</li></ul></li></ul> <h3 id="misc-security"><a href="#misc-security" class="header-anchor">#</a> Misc -> Security</h3> <ul><li>SecureBootModel
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<ul><li>Reason: Required to allow native OS updates on T2 model spoofs</li> <li>Logic: Sets T2's Secure Enclave Identifier</li> <li>Models: All models required that spoof T2 model with minimal or higher</li></ul></li></ul> <h3 id="nvram-add"><a href="#nvram-add" class="header-anchor">#</a> NVRAM -> Add</h3> <ul><li><code>-v keepsyms=1 debug=0x100</code> <ul><li>Reason: Used to see debug info of macOS's kernel and kexts, and avoids reboots on panic</li> <li>Logic: Adds args to NVRAM</li> <li>Models: Only set when Verbose Boot is enabled by the user</li></ul></li> <li><code>-liludbgall</code> <ul><li>Reason: Enables Lilu and plugin debug logging</li> <li>Logic: Adds args to NVRAM</li> <li>Models: Only set when Kext DEBUG is enabled by the user</li></ul></li> <li><code>msgbuf=1048576</code> <ul><li>Reason: Sets message buffer size to 1MB, ensures boot logs are retained</li> <li>Logic: Adds args to NVRAM</li> <li>Models: Only set when Kext DEBUG is enabled by the user</li></ul></li> <li><code>agdpmod=pikera</code> <ul><li>Reason: Fixes GPU switching on MacBookPro9,x</li> <li>Logic: Adds args to NVRAM</li> <li>Models: MacBookPro9,x</li></ul></li> <li><code>shikigva=80 unfairgva=1</code></li> <li><code>shikigva=128 unfairgva=1 -wegtree</code> <ul><li>Reason: Fixes DRM support on models with upgraded AMD Metal GPUs</li> <li>Logic: Adds args to NVRAM</li> <li>Models: Models with upgraded AMD Metal GPUs</li></ul></li> <li><code>-revasset</code> <ul><li>Reason: Enables Content Caching when using VMM spoofing</li> <li>Logic: Adds args to NVRAM</li> <li>Models: Any model using VMM spoofing</li></ul></li> <li><code>amfi=0x80</code> <ul><li>Reason: Disables Apple Mobile File Integrity to allow for root patches</li> <li>Logic: Adds args to NVRAM</li> <li>Models: Any model that requires unsigned root patches</li></ul></li></ul> <h3 id="uefi-protocoloverrides"><a href="#uefi-protocoloverrides" class="header-anchor">#</a> UEFI -> ProtocolOverrides</h3> <ul><li>GopPassThrough
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<ul><li>Reason: Used for proper output on machines with UGA firmware but GOP GPU</li> <li>Logic: Provide GOP protocol instances on top of UGA protocol instances</li> <li>Models: MacPro3,1, MacBook4,1 iMac7,1-8,1</li></ul></li></ul></details> <h2 id="injected-kext"><a href="#injected-kext" class="header-anchor">#</a> Injected Kext</h2> <p>Below is an explanation of what Kexts OpenCore Legacy Patcher will inject into memory on boot-up.</p> <details class="custom-block details"><summary>Injected Kext Explanation</summary> <h3 id="acidanthera"><a href="#acidanthera" class="header-anchor">#</a> Acidanthera</h3> <ul><li>Lilu
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<ul><li>Reason: Used for proper output on machines with UGA firmware but GOP GPU</li> <li>Logic: Provide GOP protocol instances on top of UGA protocol instances</li> <li>Models: MacPro3,1, iMac7,1-8,1</li></ul></li></ul></details> <h2 id="injected-kext"><a href="#injected-kext" class="header-anchor">#</a> Injected Kext</h2> <p>Below is an explanation of what Kexts OpenCore Legacy Patcher will inject into memory on boot-up.</p> <details class="custom-block details"><summary>Injected Kext Explanation</summary> <h3 id="acidanthera"><a href="#acidanthera" class="header-anchor">#</a> Acidanthera</h3> <ul><li>Lilu
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<ul><li>Reason: Patching engine for other kexts</li> <li>Models: All models require</li></ul></li> <li>WhateverGreen
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<ul><li>Reason: Patches GPU Frameworks and kext to ensure proper support</li> <li>Models: All models require when spoofing or have non-stock GPU</li></ul></li> <li>CPUFriend
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<ul><li>Reason: Patches IOx86PlatformPlugin to restore previous CPU profiles</li> <li>Models: All models using minimal or higher spoofing</li></ul></li> <li>AirportBrcmFixup
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<ul><li>Reason: Fixes SSD support for stock SSD found in MacBookAir6,x</li></ul></li> <li>NoAVXFSCompressionTypeZlib
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<ul><li>Reason: Prevents AVXFSCompressionTypeZlib crash on pre AVX1.0 systems in 12.4+</li></ul></li> <li>SimpleMSR
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<ul><li>Reason: Disables BD PROCHOT to prevent firmware throttling on Nehalem+ MacBooks</li></ul></li> <li>LegacyKeyboardInjector
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<ul><li>Reason: Fixes function keys on MacBook4,1/MacBook5,2</li></ul></li></ul></details> <h2 id="on-disk-patches"><a href="#on-disk-patches" class="header-anchor">#</a> On-Disk Patches</h2> <p>Unfortunately certain on-disk patches are required to achieve full functionality. Below is a breakdown of patches supported</p> <details class="custom-block details"><summary>Audio Patches (11.0+)</summary> <h3 id="extensions"><a href="#extensions" class="header-anchor">#</a> Extensions</h3> <ul><li>AppleHDA
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<ul><li>Reason: Fixes function keys on MacBook5,2</li></ul></li></ul></details> <h2 id="on-disk-patches"><a href="#on-disk-patches" class="header-anchor">#</a> On-Disk Patches</h2> <p>Unfortunately certain on-disk patches are required to achieve full functionality. Below is a breakdown of patches supported</p> <details class="custom-block details"><summary>Audio Patches (11.0+)</summary> <h3 id="extensions"><a href="#extensions" class="header-anchor">#</a> Extensions</h3> <ul><li>AppleHDA
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<ul><li>Reason: Re-add El Capitan's AppleHDA to achieve audio support</li> <li>Models: iMac7,1 and iMac8,1</li></ul></li></ul></details> <details class="custom-block details"><summary>Legacy Wireless Patches (12.0+)</summary> <p>Applicable for BCM94328, BCM94322 and Atheros Wifi cards</p> <h3 id="coreservices"><a href="#coreservices" class="header-anchor">#</a> CoreServices</h3> <ul><li>WiFiAgent.app</li></ul> <h3 id="usr-libexec"><a href="#usr-libexec" class="header-anchor">#</a> /usr/libexec</h3> <ul><li>airportd</li></ul></details> <details class="custom-block details"><summary>NVIDIA Kepler Graphics Acceleration Patches (12.0+)</summary> <h3 id="extensions-2"><a href="#extensions-2" class="header-anchor">#</a> Extensions</h3> <ul><li>GeForce.kext</li> <li>GeForceAIRPlugin.bundle</li> <li>GeForceGLDriver.bundle</li> <li>GeForceMTLDriver.bundle</li> <li>GeForceVADriver.bundle</li> <li>NVDAGF100Hal.kext</li> <li>NVDAGK100Hal.kext</li> <li>NVDAResman.kext</li> <li>NVDAStartup.kext</li></ul> <h3 id="frameworks"><a href="#frameworks" class="header-anchor">#</a> Frameworks</h3> <ul><li>OpenCL (libCLVMNVPTXPlugin.dylib, NVPTX.dylib)
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<ul><li>Reason: Re-add Kepler hardware acceleration support</li></ul></li> <li>Metal
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<ul><li>Reason: 3802 based GPU's broken by 13.3, requiring a Metal downgrade to 13.2.1</li></ul></li></ul> <h3 id="privateframeworks"><a href="#privateframeworks" class="header-anchor">#</a> PrivateFrameworks</h3> <ul><li>MTLCompiler
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<ul><li>Logic: Copied from Mojave, heavy modifications/shims</li></ul></li> <li>IOSurface.framework</li> <li>OpenGL.framework
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<ul><li>Logic: Copied from Mojave</li></ul></li></ul> <h3 id="privateframeworks-4"><a href="#privateframeworks-4" class="header-anchor">#</a> PrivateFrameworks</h3> <ul><li>GPUSupport.framework
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<ul><li>Logic: Copied from Mojave</li></ul></li> <li>SkyLight.framework
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<ul><li>Logic: Copied from Mojave, heavy modifications/shims</li></ul></li></ul></details></details></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/dortania/OpenCore-Legacy-Patcher/edit/main/docs/PATCHEXPLAIN.md" target="_blank" rel="noopener noreferrer">Help us improve this page!</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">5/18/2023, 1:32:59 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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<ul><li>Logic: Copied from Mojave, heavy modifications/shims</li></ul></li></ul></details></details></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/dortania/OpenCore-Legacy-Patcher/edit/main/docs/PATCHEXPLAIN.md" target="_blank" rel="noopener noreferrer">Help us improve this page!</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">7/11/2023, 6:08:50 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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