In Windows 7 or Windows Vista, if you try to maximize the command prompt window, it will expand only to cover around half the screen. You will not be even able to drag and increase its size!
In Windows XP, after you open a command prompt, you could run the cmd in full-screen mode by clicking Alt+Enter, but if you try this in Windows Vista and later, you will get the following message: This system does not support fullscreen mode.
This happens because in Windows 7 and Windows Vista, the device drivers do not support running all of the DOS video modes. The device drivers are based on the Windows Display Driver Model (WDDM).
You may be able to work around this problem by installing the Microsoft Windows XP version of the video drivers for your video adapter. But by doing this, while you may be able to to run full screen DOS programs, you may lose the ability to run Aero!
There is another workaround of sorts, being recommended on the Internet for this, if you want the cmd to fill your screen. But remember that it is NOT the full-screen command prompt as is understood in XP; it is only a maximized window!
Type cmd in start search box and right-click on the cmd shortcut which appears in the results. Select Run CMD as administrator.
Next, in the command prompt, type wmic and hit Enter.
Now try to maximize it!
Close it and again open it. It will open as a maximized window!
You may have to ensure that the Quick Edit Mode in the Options tab is checked.
Ofcourse, you could instead, also change its screen buffer size and window size, to achieve the same results!
If you want to reset the size back to normal defaults, right click the title bar and open Properties.
In the Layout tab, set Screen Buffer Size Width to 80, Window Size Width to 80 and Window Size Height to 25. Click OK.
In Windows 7, there’s no such thing as a real full-screen window-less cmd! What this trick does is simply make the screen size big!