Min version	XP	2003/XP64 SP1
Max version	2003/XP64 SP2	10 TH2
x86 offset offset:bitpos	Field Name
0x0000	int16_t Type
0x0002	uint16_t Size
0x0004	long ReferenceCount
0x0008	struct _DRIVER_OBJECT * DriverObject
0x000C	struct _DEVICE_OBJECT * NextDevice
0x0010	struct _DEVICE_OBJECT * AttachedDevice
0x0014	struct _IRP * CurrentIrp
0x0018	struct _IO_TIMER * Timer
0x001C	unsigned long Flags
0x0020	unsigned long Characteristics
0x0024	struct _VPB * Vpb
0x0028	void * DeviceExtension
0x002C	unsigned long DeviceType
0x0030	char StackSize
0x0034	union __unnamed Queue	union <unnamed-tag> Queue
0x005C	unsigned long AlignmentRequirement
0x0060	struct _KDEVICE_QUEUE DeviceQueue
0x0074	struct _KDPC Dpc
0x0094	unsigned long ActiveThreadCount
0x0098	void * SecurityDescriptor
0x009C	struct _KEVENT DeviceLock
0x00AC	uint16_t SectorSize
0x00AE	uint16_t Spare1
0x00B0	struct _DEVOBJ_EXTENSION * DeviceObjectExtension
0x00B4	void * Reserved