DiskExt demonstrates the use of the IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS command that returns information about what disks the partitions of a volume are located on (multipartition disks can reside on multiple disks) and where on the disk the partitions are located. -DiskExt demonstrates the use of the IOCTL_ VOLUME_GET_VOLUME_DISK_EXTENTS command tha t returns information about what disks the part itions of a volume are located on (multipartiti on disks can reside on multiple disks), and where on the disk the partitions are located.