First, some DOS facts

First, some DOS facts

Remember Before I get too deep into the Windows world, here are some DOS commands, files, and features that you'll encounter on the exam. Although there are no questions about the DOS operating system itself, you will need to know some of its files and commands because they are still in use by the Windows operating system.

Remember the following:

l CONFIG.SYS is not required for DOS or Windows to start up.

l COMMAND.COM displays the DOS command prompt, contains the internal DOS commands, and is required for DOS and Windows 3 .x to boot.

l EMM386.EXE enables expanded memory and the use of upper memory as system memory.

l The boot sequence for a DOS system is IO.SYS, MSDOS.SYS, CONFIG.SYS, COMMAND.COM, and AUTOEXEC.BAT.

l DOS memory is divided into conventional memory (640K), expanded or upper memory (384K), and extended memory (above 1,024K) areas.

Instant Answer To boot to a DOS command prompt, only the IO.SYS, MSDOS.SYS, and

COMMAND.COM files are required to load.