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About This File

Realtek ALC898 edited AppleHDA.kext_v2.3.7 for Mountain Lion 10.8.4.

Expected to work in 10.8.5 and 10.9.


Do not repost or distribute kext or included files.


This kext requires Audio ID Injection for sound, see Realtek ALC AppleHDA Audio Injection - Sound - InsanelyMac Forum. No additional patching is required.


Three Realtek ALC898 Audio_IDs, select one

1. Audio_ID: 1 supports 5 and 6 port ALC8xx onboard and/or AMD/Nvidia HDMI audio

2. Audio_ID: 2 supports 3 port ALC8xx onboard (analog 5.1) and/or AMD/Nvidia HDMI audio

3. Audio_ID: 3 supports 3, 5 and 6 port ALC8xx onboard HD4K/HD3K HDMI audio

with or without AMD/Nvidia HDMI audio


Four Realtek ALC898 Audio ID injection techniques, select one and install

1. No dsdt/audio enabler/Audio_ID: toleda/audio_kext_enabler

2. dsdt/HDEF/Audio_ID: toleda/audio_ALCInjection

3. ssdt/HDEF/Audio_ID: toleda/audio_ssdt_enabler

4. Clover/Config.plist/PCI/HDAInjection/Audio_ID: toleda/audio_ALCInjection



1. Verify Realtek ALC898 Audio ID injection installed

2. Backup installed S/L/E/AppleHDA.kext and delete

3. Install Downloads/AppleHDA.kext with preferred kext installer, i.e., Kext Wizard, Kext Utility, etc.


Capabilities/Guides/Not Supported/Customization/Support/Credit

1. See Mountain Lion Realtek ALC AppleHDA Audio - OSx86 10.8 (Mountain Lion) - InsanelyMac Forum


AppleHDA HDMI Audio

1. See Mountain Lion HDMI Audio - OSx86 10.8 (Mountain Lion) - InsanelyMac Forum

What's New in Version v2.3.7


  • 8/27/2013 - v1.0: Initial release

User Feedback

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Any ideas about why it won't work with x79?

Current AppleHDA.kext does not support x79; 10.9 AppleHDA.kext is expected to support x79.

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