LOCK [DEVICE] Run this program to disable the Eject button on your CD-ROM drive and lock the disc in the drive. This command is cancelled using the UNLOCK program or the RESET program. Using this program in your application can be useful in that it prevents the user removing the disc during the operation of your program. The program EJECT can still be used effectively. Device - CDROM device name (default first drive) or CDROM drive letter