## Physical Device Driver Reference

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### CDROMDISK_GETDRIVER (61h) - Identify CD-ROM Driver

Category:
IOCTL_CDROMDISK (80h)
Function:
CDROMDISK_GETDRIVER (61h)
Description:
Identify CD-ROM Driver

Select an item:

    Description
    Parameter Packet Format
    Data Packet Format
    Returns
    Remarks

This function identifies the specified device driver as a valid CD-ROM driver. File system drivers (FSDs) and applications should call this routine before issuing IOCtls that could lead to confusion or data damage if received by a non-CD-ROM driver. This function is performed regardless of whether the drive is already playing.

Note: Any two valid ASCII digits, each in the range of hex 30 to 39, can be used after the "CD" to indicate the caller wanting to identify the CD- ROM driver.