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How to change Screen buffer size in DOS Command Prompt

Posted by Hemprasad Y. Badgujar on January 9, 2015

Through Command 
type in cmd
mode con:cols=200 lines=170

The lines=170 part actually adjusts the Height in the ‘Screen Buffer Size’ setting, NOT the Height in the ‘Window Size’ setting.

Easily proven by running the command with a setting for ‘lines=2000’ (or whatever buffer you want) and then check the ‘Properties’ of the window, you’ll see that indeed the buffer is now set to 2000.

My batch script ends up looking like this:

@echo off
cmd "mode con:cols=200 lines=2000"

Before Windows came into existence, the most commonly used Operating System was the Disk Operating System (DOS). Even though DOS was not included in Windows for many years, there is still the command prompt feature. Command prompt is a text command line interpreter. A buffer is a transitory holding segment of RAM which contains transferrable information in the form of commands. Windows 7 can be customized to increase the buffer size of the command prompt. To increase the buffer size in Windows 7, go to Run in Start menu and type cmd. You will get the command prompt window. Right click on the window and click Properties. You can modify the buffer size value in the Options tab.

To increase the memory buffer used by the command prompt:

  • Click on Start > Run > cmd
  • Right click on the command prompt window > Properties
  • In the “Option” tab, modify the value next to the “Buffer size” entry

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