Step 3: IOCTL_DISK_CREATE_DISK is used to initialize a disk with an empty partition table.ĬREATE_DISK createDisk = new CREATE_DISK() ĬreateDisk.PartitionStyle = PARTITION_STYLE.PARTITION_STYLE_MBR Geometry = (DISK_GEOMETRY_EX)Marshal.PtrToStructure(lpOutBuffer, typeof(DISK_GEOMETRY_EX)) Int result = DeviceIoControl(handle, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, IntPtr.Zero, 0, lpOutBuffer, Marshal.SizeOf(typeof(DISK_GEOMETRY_EX)), ref size, IntPtr.Zero) Marshal.StructureToPtr(geometry, lpOutBuffer, false) IntPtr lpOutBuffer = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(DISK_GEOMETRY_EX))) The geometry is usually stored in a special, battery-powered memory location called the CMOS RAM, from where the operating system can fetch it during bootup or driver initialization.ĭISK_GEOMETRY_EX geometry = new DISK_GEOMETRY_EX() The number of surfaces (or heads, which is the same thing), cylinders, and sectors vary a lot the specification of the number of each is called the geometry of a hard disk. Step 2: IOCTL_DISK_GET_DRIVE_GEOMETRY_EX to get the physical disk's geometry ( we need some information in it to fill partition data) IntPtr handle = GetHandle(driveIndex, physicalName)

Public static bool CreatePartition(int driveIndex, string physicalName) Returns false if not created successfully Using the below code I'm able to initialize the disk and create a RAW partition, but I'm unable to tweak the parameters so that the new partition is NTFS.Īny ideas? //Returns true if drive Index is successfully created I'm trying to initialize a disk and create a NTFS partition via DeviceIOControl, without using either DiskPart or WMI.

Ntfs repartition