I have tried all alternatives and resources that I found on internet to achieve to change screen resolution in my MacOS X guest. I have the latest VirtualBox version (4.1.22) and I have MacOS X 10.6.3 Snow Leopard running in a vm guest.
Some solutions that don't work for me are:
- Tuning virtual machine settings:
Adding and in the .vbox file, or running these two commands:
vboxmanage setextradata "MAC OS X" "CustomVideoMode1" "1360x768x32"
vboxmanage setextradata "MAC OS X" "GUI/CustomVideoMode1" "1360x768x32"
- Editing Guest OS boot configuration:
Modify /Library/Preferences/SystemConfiguration/com.apple.boot.plist with these lines:
<key>Kernel Flags</key>
<string>"Graphics Mode"="1360x768x32"</string>
<key>Graphics Mode</key>
<string>1360x768x32</string>
Any other suggestion, something that I was missing.
Thanks in advance,
Best Answer
I am using VirtualBox under Ubuntu Linux, and a Mac OSX (Mountain Lion) as guest OS.
For me, the full resolution started working when I did all of the following:
0) Install MultiBeast 4, making sure that the system boots from the virtual hard disk rather than from any booting CD. I followed the instructions here:
http://www.macbreaker.com/2012/07/mountain-lion-virtualbox.html
However, at the end of the procedure I did not have the full resolution, which for me must be 1920x1080x32.
1) In the virtual machine, edit these PLIST files,
sudo pico /Extra/com.apple.boot.plist/Library/Preferences/SystemConfiguration/com.apple.Boot.plist
In this file, inside
<dict>...</dict>
, insert:sudo pico /Extra/com.chameleon.Boot.plist
In this file, inside
<dict>...</dict>
, insert:I noticed that I already had some "kernel flags", so I just added another one for "Graphics Mode". Also note that "Graphics Mode" has a space inside it.
2) Shutdown the virtual machine and do the commands
After this, the virtual machine boots with full resolution.
Now, this might be overkill, and the result could be achieved perhaps with fewer options, but I tried various things until it started working.