AT&T 6300 Service Manual page 169

INSTALLATIONS
b. Type the following:
[ copy b:gwbasic.exe a:
]
When the copy has been made, the message 1 file(s)
copied will appear. Type the following:
[ copy b:dedriver.dev a:
]
When the copy has been made, the message 1 file(s)
copied will appear.
3. To edit the CONFIG.SYS file, use EDLIN or any other
text editor that you prefer as follows:
a. Type the following line at the end of the CONFIG.SYS
file:
[ DEVICE=dedriver.dev
]
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