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3-1 An Introduction to DOSDOS stands for Disk Operating System. This is a set of commandsused to control the operations of a computer and its peripheral com-ponents. DOS makes it easy for you to use applications and createand manage files on your computer. DOS also lets you use deviceswith the computer.Loading DOSLoading DOS means to copy all the DOS programs into the computer’selectronic memory. You should follow the instructions below to startDOS.Starting DOS when the computer is off:• Insert DOS disk 1 into disk drive A and close the drive lever.ž Turn on the computer and respond to the prompts displayedon the monitor.Starting DOS when the computer is on:If you don’t have a DOS disk in your disk drive when you start yourcomputer, you will see the following message on the screen followingthe RAM test:N o n - s y s t e m d i s k o r d i s k e r r o rReplace and strike any key when readyThen, you should:• Insert DOS disk 1 into disk drive A and close the drive lever.• Press the reset button on your front panel (hardware reset)or hold down the , and keys at the sametime (software reset) to reboot your system.Starting DOS from your hard disk:If you have a hard disk, install DOS on the disk. Your PC will bootautomatically whenever you turn on the power.System MessagesRefer to your MS-DOS User’s Guide and Reference manual for infor-mation on system messages.2 Chapter 3: Operating Your System
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