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MS-DOS

Microsoft Disk Operating System

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Functions of MS-DOS Booting the Computer

Interaction with application programs and

their control

Interaction with Hardware

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DOS Architecture BIOS (Basic Input Output System) It is

specific to the individual computer and is provided by themanufacturer of the system.

DOS Kernel The Kernel is a software supplied byMicrosoft that provides a collection of Microsoftindependent services called the system functions.

Command Processor (Shell) Shell is the userinterface to the operating system. It processes andexecutes the user commands, including loading andexecuting of other programs from the disk.

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MS-DOS provides two types of commands-

Internal Command These are memory

resident command. These are automaticallyloaded into the computers main memory duringthe booting process.

External Command These are also called disk

resident commands. These are found in separatefile on the hard disk, so that they dont consumevaluable memory space.

Commands

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Internal Commands Date displays date and promts to change.

Syntax - DATE[mm-dd-yy]

Time- displays system time.Syntax TIME

CLS shows only the comand prompt.

Syntax CLS VER- displays the MS-DOS version number.

Syntax - VER

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Internal commands VOL

Syntax VOL[drive]

DIR Disk Information ReportSyntax DIR[drive:] [Path] [file name] [/P] [/W][/A[[:]attribute]] [/O sort order]

Switches

/P displays one screen at a time

/W displays in wide format

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Internal Commands

/A attributes H, -H, S, -S, D, -D, R, -R.

/O [:] Sort order N, -N, E, -E, D, -D, S.

COPY CON to create file

Syntax COPY CON

MD or MK DIR to create a directory

Syntax MKDIR [drive:] path

MD [drive:] path

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Internal command TYPE displays the contents of a text file

Syntax TYPE [drive:] [path] file name

CD or CH DIR displays name of the currentdirectory.Syntax CD [drive:] [path]

DELSyntax DEL [drive:] [path] [file name]/p

RMDIRor RD- deletes or removes a directory.Syntax RMDIR [drive:] [path]

RD [drive:] [path]

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Internal Command REN to rename a file.

Syntax RENAME [drive:] [path] filename1filename2

COPY

Syntax Copy [/y:/-y] source file destination file

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External Command CHKDSK

Syntax CHKDSK [drive:] [[path] filename] [/F][/V]

XCOPY

Syntax Xcopy source destination [/y /-y]

TREE

Syntax TREE [drive:] [path] [/f]

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External Command MOVE

Syntax MOVE [/Y:/-Y] [drive:] [path] filename

ATTRIB- changes attributesSyntax ATTRIB [+R R] [+A A] [+S S] [+H-H] [[drive:][path] filename]

DOSKEY

Syntax - DOSKEY

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External Command DELTREE

Syntax DELTREE [/Y] [drive:] path

FINDSyntax FIND [/V] [/C] [/N] [/I] string[[drive:] [path] filename]

DISKCOPY

Syntax DISKCOPY [drive1: [drive:2]] [/1] [/V]

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External Command PRINT

Syntax PRINT [/D: device]

FORMATSyntax FORMAT drive:

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