## Physical Device Driver Reference

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### CDROMDISK_GETSECTORSIZE (63h) - Return Sector Size

Category:
IOCTL_CDROMDISK (80h)
Function:
CDROMDISK_GETSECTORSIZE (63h)
Description:
Return Sector Size

Select an item:

    Description
    Parameter Packet Format
    Data Packet Format
    Returns
    Remarks

This function returns in the data buffer the number of bytes per sector that the device driver supports. This function is performed regardless of whether the drive is already playing.