The inserted diskette does not have DOS on it.When you start your system, a boot error can occur for the following reasons: If a problem occurs when booting up your system, the following appears on your screen: Loading a program into a computer when you first turn it on is called booting up. BASIC is loaded into your computer whenever you turn it on, including when you load DOS unless you first insert a program cartridge in the computer's cartridge slot or you hold down the I Option 1key on your computer console as you turn it on.Īs you've seen, going from BASIC to DOS is easy - just type DOS and press I Return I.Going from DOS back to BASIC is just as easy see Running a Cartridge From DOS." If you have an ATARI XE Game System, 130XE, 65XE, or 800XL, your computer is equipped with built-in BASIC. To load DOS without BASIC if you have an ATARI 400, 800, or 1200XL Computer, simply follow the steps explained above without inserting your BASIC cartridge and omit step 5. Naturally, you won't always be using DOS 2.5 with ATARI BASIC. When the READY prompt (from ATARI BASIC) appears on your screen, type DOS and press I Return I.If you turn up the volume on your TV, you can hear it beep as DOS loads. The disk drive's BUSY light goes on again as DOS loads into your computer. Then turn the latch to the closed (vertical) position. Remove your DOS 2.5 Master Diskette from its protective paper sleeve and insert it in your drive, with the label facing up and toward you, until it clicks into place. When the BUSY light goes off, turn the latch on the front of your ATARI XF551 Disk Drive to the open (horizontal) position.The drive makes a whirring sound when turned on, and the BUSY light goes on.Ĭaution: Never insert or remove a diskette in your drive while the BUSY light is on. Turn on your disk drive if you have more than one disk drive in your system you must always use Drive 1 to load DOS.If you have an ATARI XE Game System, 130XE, 65XE, or 800XL with built-in BASIC, be sure there is no cartridge in your computer, and no diskette in your disk drive.
Make sure that there is no diskette in your disk drive. If you have an ATARI 400, 800, or 1200XL Computer, insert an ATARI BASIC cartridge into your computer's cartridge slot.