Disk Operating System Concept and command

Disk operating system

1. DOS
(Disk Operating System)

2. Operating System
DOS
Windows
LINUX
UNIX
etc...

3. What is DOS ?
Single user operating system.
CUI (Character User Interface)

4. Booting Sequence
Basic Input Output System (BIOS)
BIOS automatically looks for the PC’s master
computer program, first in the A:\ drive, if a
floppy drive is loaded, otherwise in the C:\ drive.

5. What is FILES?
Data files.
Program files.
Sub Directory files

6. Every file name has two parts
File name
Extension

7. Various Versions of DOS

8. Important files in DOS
IO.sys
MS-DOS.sys
COMMAND.com

10. What are DOS command?
Internal command
External command

11. Internal Commands
Cls
Dir
Copy
Del
Ren
Type
Cd
Md
Rd
undelete,
Erase
Date
Time
Ver
Prompt
Break
Vol
Pause

12. External Commands
Diskcopy
Xcopy
Format
Label
Mem
More
Tree
deltree
lock
Unlock
Scandisk
Diskcomp
Chkdsk
copy con
Mode
Fdisk
attrib
Move