AddDrive
AddDrive Add a drive to the drive queue
#include <Files.h> File Manager
OSErr AddDrive(drvrRefNum, drvNum, qEl );
short drvrRefNum ; driver RefNum
short drvNum ; drive number
DrvQElPtr qEl ; pointer to DrvQEl
returns Error Code; 0=no error
AddDrive adds a drive to the drive queue.
drvrRefNum driver reference number
drvNum drive number being added
qEl pointer to DrvQEl structure
Returns: an operating system Error Code.