Wednesday, May 30, 2007

Autorun.inf, What is it?

The Autorun.inf file and the AutoRun technology

When you create a CD/DVD menu with SamLogic CD-Menu Creator you have the option to create a file with the name Autorun.inf. This file is very important if you want to create an autorun / autoplay menu (a menu that opens automatically) because it instructs Windows which application that should be launched when the CD or DVD is inserted in the drive.

The Autorun.inf file must always be located in the root directory of the CD/DVD. If you place it in a sub directory Windows will not found it. When you insert the disc Windows will look after Autorun.inf in the root directory and if it find it, it will read the file and interpret the contents of it.This feature to automatically start programs on compact discs is sometimes referred as the Windows AutoRun technology.

All Windows since Windows 95 have this technology built-in. Almost all software that is distributed via CD or DVD uses this technology to automatically open menus or start programs. You can read more about this in the related article:

Why Create an Autorun Menu For Your CD or DVD?

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