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What is the .DOS File Extension?

.DOS File Extension Description:

The DOS file extension was popular during the days of the disk operating system's reign over the computer world. DOS provides access to, the computer system, using only a simple diskette for booting up the computer. Through that, different applications can be used with the computer like WordStar, Quattro, and Lotus 1-2-3. But today, there are now different purposes for the DOS file extension. It can now be associated with the 1st Reader, DOS 7 Systems Files, General Network Driver, NDIS Network Card Driver, and Text File.

The DOS file extension is an external command file for the 1st Reader. Being that, it acts as the executable utility that is included with the MSDOS package. The DOS file extension is a freestanding application. On the other hand, the DOS file extension is a system file for the DOS 7. The DOS file extension is a file created and maintained by the DOS 7 or the Disk Operating System 7. This is used by many subroutines and commands to perform certain operations.

Aside from assisting the different DOS-related applications, the DOS file extension also works as a network driver file. This file extension provides a software identity of the hardware network card, that enables users connect to a local area network. Just like many other devices, the network card also needs a device driver so it can be recognized by the computer, and be used by the application. Before the user can use the network card to create a connection to a certain network, he has to install the DOS file extension first.

The DOS file extension can work well with any network card, even with the NDIS Network Card. NDIS or Network Driver Interface Specification is a special application programming interface used for network interface cards. It also has a network card, and this card cannot be utilized by the user's computer system without the DOS file extension working for the device's installation.

Also, the DOS file extension is used for the information of DOS specifications in text format. This file works for the benefit of users in having all the information he needs about the disk operating system.

Author: Microsoft Corporation, IBM
Author URL:,
Related Applications: 1st Reader, DOS 7 Systems Files, General Network Driver, NDIS Network Card Driver
Common Path: n/a


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What Causes .DOS files Errors?

.DOS files errors are potential serious Windows file system errors and are often brought on due to a defective registry that should be fixed immediately to prevent further corruption in other software and/or devices. Risks include device damage, blue screen errors and fatal crashes.

.DOS files Errors - Common Symptoms:

.DOS files error symptoms include program crashes, shut down or start up problems, slow personal computer performance, laggy behaviour, screen freezing, beeping sounds, trouble loading application files and errors while installing software.

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