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Sierra on Asrock X79 extreme6

asrock sierra extreme6 gtx 770 i7

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xuzhin

xuzhin

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System:
Asrock X79 extreme6 p2.50
Nvidea GeForce gtx 770
i7-4930K @ 3.40ghz

 

i'm trying to start fresh. i have a working mavericks, but i want to install sierra and not high sierra, because some pro tools plugins don't work on high sierra yet.

either way, i created the usb boot stick with ##### and dragged ##### on there, i get to the clover boot screen, and can't get any further, i see the black screen, apple logo, loading bar appears, but doesn't start moving at all. i guess some boot settings are wrong, for the old mavericks system chameleon used:

<?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>SSDT</key>
   <string>Yes</string>
   <key>GraphicsEnabler</key>
   <string>No</string>
   <key>PciRoot</key>
   <string>1</string>
   <key>EthernetBuiltIn</key>
   <string>Yes</string>
   <key>Kernel Flags</key>
   <string>npci=0x2000</string>
   <key>UseKernelCache</key>
   <string>No</string>
</dict>
</plist>

now i don't have any idea how to get those settings into the boot options of the clover bootloader, i've been trying to change a few settings, but i've gone through 10 different clover boot settings combinations, with no luck.

 

anybody that can help me?

 

i couldn't find a guide on this site, not even one that explains how to create a sierra usb stick to boot with. sorry guys i'm really not good with this.








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