NTSTATUS FstubDetectPartitionStyle( IN PDISK_INFORMATION Disk, OUT PARTITION_STYLE* PartitionStyle ); Routine Description: Detect how a disk has been partitioned. For an MBR partitioned disk, sector zero contains the MBR signature. For an EFI partitioned disk, sector zero contains a legacy style MBR with a single partition that consumes the entire disk. Arguments: Disk - The disk to determine the partition style for. PartitionStyle - A buffer to Return Values: STATUS_SUCCESS - If the disk has been partitioned by a recognized partitioning scheme EFI or MBR. STATUS_UNSUCCESSFUL - If partitioning scheme was not recognized.