Anyone installed High Sierra 10.13.6 in legacy mode?

[mozbius]

Has anyone been able to install High Sierra 10.13.6 in a legacy setup? I have been forced to reinstall 10.13 because 10.13.6 would get me the dredded No Entry / Prohibited access screen...

Doing a verbose boot I would get :

AppleUSBHostResources@: AppleUSBHostResources::allocateDownstreamBusCurrentGated: assuming successful wakeUnits 1000 sleepUnits 0

Still waiting for root device

My setup is build around a:

• P6T Deluxe v2 (Core i7 LGA1366 Intel X58 chipset) motherboard NON UEFI / LEGACY
• GTX 260 * 2 SLI
• Enoch r2922 installed in the EFI partition

 

I am digging hard around the net to figure out what I need to do to make 10.13.6 from App Store work (when it is installed I get the No Entry screen unless I boot from a USB key and the Ethernet card for some reason appears to be restricted only to local IPs).

 

EFI / Extra / org.chameleon.Boot.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>EthernetBuiltIn</key>
    <string>Yes</string>
    <key>GraphicsEnabler</key>
    <string>Yes</string>
    <key>Kernel Flags</key>
    <string>dart=0</string>
    <key>Timeout</key>
    <string>3</string>
    <key>UseKernelCache</key>
    <string>Yes</string>
</dict>
</plist>

 

EFI / Extra / kernel.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>KernelBooter_kexts</key>
    <string>Yes</string>
</dict>
</plist>