Hilft dir Mavericks auch? Da könnte ich was zu schreiben...
Hier mal mein Boot.plist file, evt. auch zum Start:
<?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>Graphics Mode</key>
<string>1920x1200x32</string>
<key>GraphicsEnabler</key>
<string>Yes</string>
<key>IGPEnabler</key>
<string>No</string>
<key>Kernel</key>
<string>mach_kernel</string>
<key>Legacy Logo</key>
<string>Yes</string>
<key>PciRoot</key>
<string>1</string>
<key>Timeout</key>
<string>3</string>
<key>UseKernelCache</key>
<string>Yes</string>
</dict>
</plist>
Als Bootloader verwende ich Chimera 2.2.1 r2248