ref: here
1. Make a clean installing OSX & select one of boot loader
2. Update to Chameleon 2.0RC2 Build r640 & Repair Disk Permissions and reboot twice to ensure that your installation success.
3. looking for screen resolution available to your machine from (Video Info) in Chameleon boot screen.
Make Test, just boot in (Verbose) mode and type your screen resolution or type this.
-v “Graphics Mode”=”1280x800x32@60Hz”
Now, you have 1280×800 fixed resolution without mouse disappear
4. Run (OSX86Tools), select (Add EFI String/Boot Flag) & Add this code to (Flag) Field
“Graphics Mode”=”1280x800x32@60Hz”
Press Apply, Reboot & Success.
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ref: here
Open Terminal from the Utilities Folder, then run this:
sudo pico /Library/Preferences/SystemConfiguration/com.apple.Boot.plist
the system ask for your password, then add it after the
<key>Kernel Flags</key>
<string>“Graphics Mode”=”1280x1024x32”</string>
I don’t know why it is not working with
<key>Graphics Mode</key>
<string>1280x1024x32</string>