Disk Operating System (DOS) is a family of operating systems used on personal computers. Now, the term DOS became the generic term for any operating system loaded from a disk storage device when the system is powered on. DOS is a system used to manage all the resources of the computer system. Resources in both computer hardware and software must be managed properly so that the system can work well (stable), to avoid the seizure of the (bottleneck), giving prioritan workmanship, avoiding disturbances (viruses, hackers), address of system failures (roolback) .
DOS programs usually work behind the scenes (not visible) and allows users to enter characters from the keyboard, recognize the file structure for the data stored on disk, and displays the data on the monitor or printer. DOS is responsible for finding and compiling the data and applications on the disk. With the introduction of the operating system with a GUI has made DOS is rarely used and quite old. However DOS is still important in many areas such as the scope of programming, operates the old application, and installation of the Windows operating system, especially on the old computer system. All generations of Windows supports DOS command for compatibility with older applications. It is thus very important to understand the basis of DOS before continuing the installation process of Windows.
DOS can be useful as an auxiliary device when Windows can not run properly and can access the hard drive without a GUI and is able to process diagnostics and troubleshooting the system.
- MS-DOS (Microsoft Disk Operating System), including being a DOS Tandy, Compaq DOS
- Q-DOS (Quick and Dirty Operating System) and some clones from the MS-DOS operating system is sold to system builders IBM PC / Compatible .
- IBM PC-DOS (International Business Machines Personal Computer Disk Operating System), which although still made by Microsoft, altered a little to be used by the IBM PC.
- DR-DOS (Digital Research Disk Operating System), which is made by the makers of the operating system CP / M, Gary Kildall.
- Personal Novell Netware, a DR-DOS version that was sold to Novell because the parent company of the CP / M into bankruptcy (Novell acquired Digital Research Incorporated).
- Caldera DOS, a version of the Novell Personal Netware sold to Caldera Corporation.
- FreeDOS, a DOS version that was built from the remains of the development of Caldera DOS, developed by the open source community.
There are three main parts to build the operating system disk:
This file is used during the boot process on DOS or startup process on the system.
This section allows the system to organize the data in a file system folder.
This section allows the user to set the resources of the system, troubleshoot the system, and configure system settings.