This command is used to disable all input options on the part of the user. There are no other special settings for this command.

This command is used to unlock the blocked input options again. There are no other special settings for this command.

With this command a specified CD/DVD-ROM drive can be opened or closed. Select the appropriate option and enter the drive letter (for example, "D:"). If no drive letter is specified, the first drive found will be opened/closed.

With this command a specified CD/DVD-ROM drive can be locked or unlocked for the user. This means that the user is no longer able to readily open or close the drive. Select the appropriate option and enter a drive letter (for example, "D:"). If no drive letter is specified, a dialog will prompt you to select the drive which is to be locked/unlocked.