my answer to: IOCTL_DISK_GET_DRIVE_LAYOUT_EX on Vista

Thanks for all replies to my Thread:
http://www.osronline.com/showThread.cfm?link=164757

It was good to hear that there was this change with Vista, even it will mean additional work now for me.
I will try the way Harish Arora suggested or maybe I will read the MBR (block#0) and will extract from there the partition information.

Thanks again
Norbert