## Physical Device Driver Reference

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### DSK_UNLOCKEJECTMEDIA (40h) - Removable Media Control

Category:
IOCTL_DISK (08h)
Function:
DSK_UNLOCKEJECTMEDIA (40h)
Description:
Removable Media Control

Select an item:

    Description
    Parameter Packet Format
    Data Packet Format
    Returns
    Remarks

This function physically locks/unlocks the media in the drive. It also ejects the media for drives that support these functions.