- Nov 6, 2016
My current DVMT is set to 96MB which gives 64MB in Windows 8.1.
View attachment 139604
To change my DVMT setting to 128MB, I entered
setup_var 0x18C 0x4
This is how the output looks like when successfully changed at the DOS prompt.
View attachment 139606
And here is what it looks like in Windows:
View attachment 139605
So obviously as this doesn’t work in OSX I had to return it to 96MB, using the following
setup_var 0x18C 0x3
This gives the following result when successfully changed.
View attachment 139607
Note that the only interaction I have is typing in the setup_var 0x18C 0x3 and when its finished typed in reboot. No other input is required.
With 128MB OSX boots but I get a black screen with only the mouse pointer hence why I had to revert to 96MB.
Hope this helps….
I follow all your guide, but when i setuup the varialble, i get a message like this
--> GUID does not match expected GUID, taking it nevertheless...
expected a different size of the Setup variable (got 1350 (0x546) bytes).
Continue with care...
successfully obtained "Setup" variable from VSS (got 1350 (0x546) bytes).
offset 0x1ee is: 0x04
setting offset 0x1ee to 0x04
var name: Setup, var size: 12, var guid: 80e1202e-2697-4264 -