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Table Of Contents  CertiGuide to A+ (Operating Systems)
 9  Chapter 0011:  DOS
      9  III  What is DOS?

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III  What is DOS?
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IV  COMMAND.COM and Basic DOS Commands
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Identifying the Files

CONFIG.SYS is called at bootup by IO.SYS

IO.SYS goes to the BIOS at boot.

Changes in CONFIG.SYS require a re-boot.

Boot Order (2-5-6-7-8 Characters)

The boot order of DOS is: IO.SYS, MSDOS.SYS, CONFIG.SYS, COMMAND.COM, AUTOEXEC.BAT. The 2-5678 order represents the number of characters in each filename, so if you can remember the five filenames, you can also correctly put them in the right boot order.



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III  What is DOS?
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IV  COMMAND.COM and Basic DOS Commands
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