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MS DOS
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The system files for MS-DOS are io.sys,
msdos.sys and command.com. The files loaded with the IBM-DOS
operating system are ibmdos.sys, ibmbio.sys and command.com.
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Once DOS is loaded into memory, the system looks
for two files; Config.sys and Autoexec.bat. These files are
"user configurable". This means that you can make changes to
these files that will affect the way your computer starts up.
DOS then configures your system and carries out any start up
commands that are in these files.
If the final command in autoexec.bat is to open
windows3.x, then DOS opens windows and leaves you in the program
manager. If not, DOS leaves you with the Command Prompt (C:\>)
and waits for your command.
The "C:" means you are currently using or "on"
your C drive, which is usually your hard drive on a stand alone
computer, and the "\" means you are at the "root" of that drive
(the very beginning of the drive's directory).
continued...
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