Multiple Disk Drive Systems
The DIR command can be used to read the directories of other
drives in your system, if any are installed. For instance, to read
the directory of the B drive, when you are logged onto drive A,
enter the command:
The computer will display the directory of the diskette inserted
in the B drive. A similar command:
will cause the computer to display the directory of your hard
disk.
Note that in both examples, the A drive remains the default
drive. To change the default drive from A to B, and then
display a directory listing, enter the command series:
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Using MS-DOS With Your Computer