[ros-dev] why IOCTL_DISK_GET_DRIVE_GEOMETRY_EX failed in windows 2000?

[Jack Yi]

hi,guys:
     I don't know if it is proper to ask such a question here. I'm sorry if
I break some rules.

why IOCTL_DISK_GET_DRIVE_GEOMETRY_EX fail in windows 2000 and succeed in
windows xp and greater version?

or how can I get a disk(whatever,ATA,SCSI,USB )'s real size(including
additional sectors) in a easy way in windows 2000, just like there is such a
function,

__int 64GetDiskRealSize(HANDLE hDisk);

Could anybody help me?
Waiting for reply.
Thank you!
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