CD size

Hi all !

I have noticed a problem when trying to check the CD size for small sizes
(the size was 1.5M) on W2K3/XP.

IOCTL_DISK_GET_DRIVE_GEOMETRY and IOCTL_DISK_GET_DRIVE_GEOMETRY_EX ioctls
failed and

IOCTL_DISK_GET_DRIVE_LAYOUT returned in the partition #0 size (which should
be the disk size)

the size of the previously inserted CD.

Is it the right behavior and if yes, what is the smallest supported size?

Thanks,

Dani