Lenovo ThinkPad 770 TP 770X User's Reference that shipped with the system - Page 140
For DOS, Start, DOS Prompt, The DOS prompt window appears.
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Hints and Tips For DOS: DOS If a memory shortage or memory error occurs, do as follows: 1. Try the same actions as described for Windows 3.1. 2. Unload any unnecessary programs from the WIN.INI file (for example, FUELWIN for ac operations). You can use the ThinkPad Configuration program from the DOS prompt. To start the program, do the following: 1. Click on Start; then click on the DOS Prompt icon. The DOS prompt window appears. 2. Type PS2 ? at the DOS prompt. The "ThinkPad Configuration" online help window appears: C:\>PS2 ? (C) Copyright IBM Corp. 1993,1998. All rights reserved. US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Command Syntax: PS2 [Parameter1] [Parameter2] [Parameter3] Following are available [Parameter1]. For the complete command syntax, type 'PS2 ? [Parameter]'. 1.Power Management related 3. Select an item from the menu, and follow the instructions on the screen to set the features. You can also create a batch file like the one shown to match your operating environment. The following sample batch file sets a longer battery operating time: 126 IBM ThinkPad 770X User's Reference