ms dos
DISK OPERATING SYSTEM
INTRODUCTION:
•
MS-DOS (Microsoft Disk Operating System) is a single-user, single-tasking computer operating system that uses a command line interface (CLI).
•
It also works as an interpreter between user and computer.
•
The term DOS can refer to any operating system, but it is most often used as shorthand for MS-DOS (Microsoft disk operating system). Originally developed by Microsoft for
IBM, MS-DOS was the standard operating system for IBM-compatible personal computers. The initial versions of DOS were very simple and resembled another operating system called CP/M. Subsequent versions have became increasingly sophisticated as they incorporated features of minicomputer operating systems. However, DOS is still a 16-bit operating system and does not support multiple users or multitasking.
For some time, it has been widely acknowledged that DOS is insufficient for modern computer applications. Microsoft Windows helped alleviate some problems, but still, it sat on top of DOS and relied on DOS for many services. Even Windows 95 sat on top of
DOS. Newer operating systems, such as Windows NT and OS/2 Warp, do not rely on
DOS to the same extent, although they can execute DOS-based programs. It is expected that as these operating systems gain market share, DOS will eventually disappear. In the meantime, Caldera, Inc. markets a version of DOS called DR-OpenDOS that extends MSDOS in significant ways.
•
•
Components of MS-DOS
•
MS-DOS consists of four essentials programs and a set of additional utilities. Four main programs are
• Boot Record
• IO.SYS
• MSDOS.SYST
• COMMAND.COM
What is BOOTing ?
•
•
•
It is a process that starts up a computer.
It checks for proper functioning of all the peripheral devices attached with the system.
It searches for the operating system and, when located, loads it into the main memory.
OR
When the computer is switched on, the firmware program in Read Only
INTRODUCTION:
•
MS-DOS (Microsoft Disk Operating System) is a single-user, single-tasking computer operating system that uses a command line interface (CLI).
•
It also works as an interpreter between user and computer.
•
The term DOS can refer to any operating system, but it is most often used as shorthand for MS-DOS (Microsoft disk operating system). Originally developed by Microsoft for
IBM, MS-DOS was the standard operating system for IBM-compatible personal computers. The initial versions of DOS were very simple and resembled another operating system called CP/M. Subsequent versions have became increasingly sophisticated as they incorporated features of minicomputer operating systems. However, DOS is still a 16-bit operating system and does not support multiple users or multitasking.
For some time, it has been widely acknowledged that DOS is insufficient for modern computer applications. Microsoft Windows helped alleviate some problems, but still, it sat on top of DOS and relied on DOS for many services. Even Windows 95 sat on top of
DOS. Newer operating systems, such as Windows NT and OS/2 Warp, do not rely on
DOS to the same extent, although they can execute DOS-based programs. It is expected that as these operating systems gain market share, DOS will eventually disappear. In the meantime, Caldera, Inc. markets a version of DOS called DR-OpenDOS that extends MSDOS in significant ways.
•
•
Components of MS-DOS
•
MS-DOS consists of four essentials programs and a set of additional utilities. Four main programs are
• Boot Record
• IO.SYS
• MSDOS.SYST
• COMMAND.COM
What is BOOTing ?
•
•
•
It is a process that starts up a computer.
It checks for proper functioning of all the peripheral devices attached with the system.
It searches for the operating system and, when located, loads it into the main memory.
OR
When the computer is switched on, the firmware program in Read Only