PATA and macOS Monterey support

[khronokernel]

With macOS Monterey, the AppleIntelPIIXATA we use to restore PATA support broke. Because of this, numerous 2008 era Macs have lost support for their DVD drive when booted into Monterey.

Currently unknown where the issue lies, further investigation required.

Affected Models

• MacBook4,1
• MacBookPro4,1
• iMac7,1
• iMac8,1
• MacPro3,1
• Xserve2,1

[HackintoshHD]

Not that I had a direct answer to the question - I just want to mention that AppleIntelPIIXATA is open source (maybe helpful in this context).

[joevt]

First version: 10.2 - 10.2.8 AppleIntelPIIXATA-6
Last version: 10.6.3 - 10.6.8 AppleIntelPIIXATA-251.0.1
Starting with 10.7, the only ATA stuff is IOATAFamily.

[Ivantroniks]

Hello

Just a suggestion, AppleIntelPIIXATA.kext makes Monterey take 3 times longer to boot than with kext disabled, my suggestion is to limit the use of kext to big sur using the max kernel to 20.99.99, in which a solution is found.

Boot time with kext enabled 1min 20sec
Boot time with kext disabled 23sec
(MacPro 3.1, NVMe)

Also the boot time is affected in an iMac8,1 I suppose in all the machines that use the kext.

(This only affects Monterey)...