Betekintés: Jelena Mamčenko - Lectures notes on Operating systems, oldal #2

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....................................................................................... 20

18

Graphics - Video card....................................................................................................................... 20

19

Disk operating system ...................................................................................................................... 21
19.1

History of DOS ............................................................................................................................. 21

20

Examples of disk operating systems that were extensions to the OS ............................................... 22

21

Examples of Disk Operating Systems that were the OS itself ......................................................... 22

22

Input/Output System......................................................................................................................... 23

23

Command Syntax ............................................................................................................................. 25
23.1

Checking the Disk ........................................................................................................................ 28

23.2

Backing Up a Floppy Disk ........................................................................................................... 28

Lecture Notes on Operating Systems

2

Source: http://www.doksi.net

Jelena Mamčenko

Operating Systems

23.3

Erasing Files ................................................................................................................................. 29

23.4

Renaming Files ............................................................................................................................. 29

23.5

Copying Files ............................................................................................................................... 29

24

Subdirectory Introduction................................................................................................................. 31

25

Subdirectory Review ........................................................................................................................ 34

26

BATCH FILES ................................................................................................................................. 34
26.1

27

AUTOEXEC.BAT ....................................................................................................................... 41
Data structure in disk. ....................................................................................................................... 45

27.1

Disk Structure and Partitions ........................................................................................................ 45

27.2

Disk tracks, cylinders, and sectors ............................................................................................... 45

27.3

Cylinder group .............................................................................................................................. 46

27.4

Physical disk structure .................................................................................................................. 46

28

File systems ...................................................................................................................................... 47

29

FAT12 .............................................................................................................................................. 51

30

Initial FAT16 .................................................................................................................................... 51
30.1

Final FAT16 ................................................................................................................................. 52

30.2

Long File Names (VFAT, LFNs) ................................................................................................. 52

30.3

FAT32 .......................................................................................................................................... 52

30.4

FAT and Alternate Data Streams ................................................................................................. 53

30.5

Main disk structures ...................................................

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