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LASTDRIVE()
Evaluates the setting of LASTDRIVE in Config.sys.
Returns <expC> drive letter specified on the LASTDRIVE= line in Config.sys.
Returns "0" if LASTDRIVE is not specified in Config.sys
"-1" if Config.sys cannot be found.
These are returned instead of our standard error message for
consistency with other functions that read Config.sys and return <expN>.
Uses COMSPEC to determine where to find Config.sys.
m_lastdr = LASTDRIVE()
DO CASE
CASE m_lastdr = -1
? "Error -- cannot find Config.sys"
CASE m_lastdr < "M"
? "Error -- set LASTDRIVE to 'M' in Config.sys"
OTHERWISE
? "Congratulations -- Config.sys is OK!"
ENDCASE
Hazard
If you boot from a floppy disk, then change disks, or SET
COMSPEC to a different disk drive, this will not return the
correct result unless the new disk or drive also contains a
Config.sys file with the same information as the one with
which you booted.
Placed in the Public Domain by Tom Rettig Assoc.
See Also:
BUFFERS()
COUNTRY()
FILES()
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