- Boot OS X
- Open the TextEdit program in the Applications folder
- With TextEdit, open the file: /Library/Preferences/SystemConfiguration/com.apple.Boot.plist
- Open the file, and add these two lines (right after the <string>Yes</string> line if you are on Tiger or <string></string> line if you are on Leopard)
<key>Graphics Mode</key>
<string>1280x1024x32</string>
- Replace the 1280x1024x32 with the resolution you want
- Then, in go to File >> Save As..
- Save the file as com.apple.Boot.plist on the Desktop (make sure the .plist part is there!)
- Navigate the the /Library/Preferences/SystemConfiguration/ folder
- Drag your com.apple.Boot.plist file on the Desktop into the folder window
- When a messages appears, click Authenticate and Replace and enter your password
- You’re done! Reboot OS X to see the changes
Here is an example of what the com.Apple.boot.plist file looks like with Leopard:
<?xml version=”1.0″ encoding=”UTF-8″?>
<!DOCTYPE plist PUBLIC “-//Apple Computer//DTD PLIST 1.0//EN” “http://
www.apple.com/DTDs/PropertyList-1.0.dtd”>
<plist version=”1.0″>
<dict>
<key>kernel</key>
<string>mach_kernel</string>
<key>Kernel Flags</key>
<string></string>
<key>Graphics Mode</key>
<string>1280x1024x32</string>
</dict>
</plist>