Trackpad Tap:
Problem:  Trackpad tap not working.
Fix: Put computer into sleep then it works after waking up.

Boot cannot find com.apple.Boot.plist:
If something goes wrong usually you don’t get the full 1280×800 resolution. You can fix that just adding to com.apple.Boot.plist configuration file (did you remember the time-out for boot menu?) these new lines:

* <key>Graphics Mode</key>
* <string>1024x600x32</string>

You should have something like this:

<plist version=”1.0″>
<dict>
<key>Kernel</key>
<string>mach_kernel</string>
<key>Kernel Flags</key>
<string>cpus=1</string>
<key>Quiet Boot</key>
<string>No</string>
<key>Timeout</key>
<string>7</string>
<key>Graphics Mode</key>
<string>1024x600x32</string>
<key>Boot Graphics</key>
<string>Yes</string>
</dict>
</plist>

NOTE: Before you reboot the system, remember to repair the privileges!

Kexts:
kextHelper (it sets the correct rights and stuff and makes a backup of your replaced kexts).

If ever a kext has your system crashing, not booting or unstable do the following:

Boot into “single user mode” by specifying -s at the boot prompt

Then type: /sbin/fsck -fy /sbin/mount -uw / (don’t forget the / at the end!!)

Then erase the offending kext(s) with the backup(s) (example of AppleIntelGMA950 kext) cp -R /Backup Extensions/AppleIntelGMA950.kext/ /System/Library/Extensions/ rm /System/Library/Extensions.mkext

Reboot with the -f option

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OSX86 9 step install guide:
from: http://www.taranfx.com/blog/?p=1204

Uses bootloader from Windows 7 after installing OS X to repair the boot sector, with Diskpart commands. Then adding OS X to windows boot menu while inside windows.

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