## Physical Device Driver Reference

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### CDROMDISK_GETUPC (79h) - Get UPC

Category:
IOCTL_CDROMDISK (80h)
Function:
CDROMDISK_GETUPC (79h)
Description:
Get UPC

Select an item:

    Description
    Parameter Packet Format
    Data Packet Format
    Returns
    Remarks

This function returns the Universal Product Code (UPC) for the disc. This is a unique code identifying the disc. The UPC is 13 successive BCD digits (4 bits each) followed by 12 bits set to 0.