1、INITCODE的问题？卸载的时候Unload函数不在内存了把？
2、学驱动我用VS2010+WDK7.6，虚拟机用XP
3、先学32位的，64位是一样的，甚至代码都不用改就能编译成64位驱动。学习和开发64位驱动不用证书，测试模式就行了。

解答你后面的问题

网上的免费32位驱动教程多如牛毛,不懂用GOOGLE就去亚马逊买书看
64位免费的驱动教程,目前就这一个http://bbs.pediy.com/showthread.php?t=187348

派遣例程都没有正确设置，不蓝屏才怪。
DriverEntry一个重要的工作就是设置
DriverObject->MajorFunction[IRP_MJ_XXXXX]。

[QUOTE=aait;1287135]派遣例程都没有正确设置，不蓝屏才怪。
DriverEntry一个重要的工作就是设置
DriverObject->MajorFunction[IRP_MJ_XXXXX]。[/QUOTE]

系统有默认的派遣函数，如果不处理的话是可以不设置的。

有现成的驱动开发的书，比如《寒江独钓》

平时大家学习驱动的时候用的什么环境呢？
我是VS2012+WDK8
虚拟机是win_X86的还是64的呢？ 还是XP的？
我的是WIN7 64位
如果是64位的话，那么证书要怎么解决呢？
破解PG：http://bbs.pediy.com/showthread.php?t=187348 看这个帖子
如果不是64位的，那学完之后是不是没用了？ 我的意思是你做的驱动只能在win7_X86或XP上运行，要做64位和win8还要重写代码？
不是学完就没用了，而是之间有少许不同。学习的只是总会有用的。
HelloNTDriver代码(我用的C++写的，微软官方推荐用C写驱动)：
#ifdef __cplusplus
extern "C"
{
#endif
#include <ntddk.h>
#ifdef __cplusplus
}
#endif

NTSTATUS HelloNTDDKDispatch (PDRIVER_OBJECT pDeivceObject, PIRP pIrp);
VOID DriverUnload(PDRIVER_OBJECT pDriverObject);
NTSTATUS CreateDevice(PDRIVER_OBJECT pDriverObject);
NTSTATUS CreateDevice2(PDRIVER_OBJECT pDriverObject);

typedef struct _DEVICE_EXTENSION
{
        PDEVICE_OBJECT pDevice;
        UNICODE_STRING ustrDeviceName;
        UNICODE_STRING ustrSymLinkName;
}DEIVCE_EXTENSION, *PDEVICE_ENTENSION;

VOID DumpInformation(PDRIVER_OBJECT pDriverObject)
{
        DbgPrint("---------------------------------------------------\n");
        DbgPrint("Begin Dump.....\n");
        DbgPrint("Driver Address:0X%08X\n",pDriverObject);
        DbgPrint("Driver name:%wZ\n",&pDriverObject->DriverName);
        DbgPrint("Driver HardwareDatabase:%wZ\n",&pDriverObject->HardwareDatabase);
        DbgPrint("Driver first device:0X%08X\n",&pDriverObject->DeviceObject);

        PDEVICE_OBJECT pDevice = pDriverObject->DeviceObject;
        int i =1;
        for (;pDevice!=NULL;pDevice =pDevice->NextDevice)
        {
                DbgPrint("The %d Device\n",i++);
                DbgPrint("Device AttachedDevice:0X%08X\n",pDevice->AttachedDevice);
                DbgPrint("Device NextDevice:0X%08X\n",pDevice->NextDevice);
                DbgPrint("Device StackSize:%d\n",pDevice->StackSize);
                DbgPrint("Device's DriverObject:0X%08X\n",pDevice->DriverObject);
        }

        DbgPrint("Dump END.....\n");
        DbgPrint("---------------------------------------------------\n");
}

extern "C" NTSTATUS DriverEntry(PDRIVER_OBJECT pDriverObject, PUNICODE_STRING pRegistryPath)
{
        NTSTATUS status;
        __asm int 3;
        DbgPrint("DirverEntry...\n");

        pDriverObject->DriverUnload = DriverUnload;
        pDriverObject->MajorFunction[IRP_MJ_CLOSE] = (PDRIVER_DISPATCH)HelloNTDDKDispatch;
        pDriverObject->MajorFunction[IRP_MJ_CREATE] = (PDRIVER_DISPATCH)HelloNTDDKDispatch;
        pDriverObject->MajorFunction[IRP_MJ_READ] = (PDRIVER_DISPATCH)HelloNTDDKDispatch;
        pDriverObject->MajorFunction[IRP_MJ_WRITE] = (PDRIVER_DISPATCH)HelloNTDDKDispatch;

        status = CreateDevice(pDriverObject);
        status = CreateDevice2(pDriverObject);

        DumpInformation(pDriverObject);

        DbgPrint("DirverEntry leave...\n");
        return status;

}

VOID DriverUnload(PDRIVER_OBJECT pDriverObject)
{
        PDEVICE_OBJECT pNextObj;
        DbgPrint("Enter DriverUnload\n");
        pNextObj = pDriverObject->DeviceObject;
        while (pNextObj != NULL)
        {
                PDEVICE_ENTENSION pDevExt = (PDEVICE_ENTENSION)pNextObj->DeviceExtension;

                UNICODE_STRING pLinkName = pDevExt->ustrSymLinkName;
                IoDeleteSymbolicLink(&pLinkName);
                pNextObj = pNextObj->NextDevice;
                IoDeleteDevice(pDevExt->pDevice);
        }

}

NTSTATUS HelloNTDDKDispatch (PDRIVER_OBJECT pDeivceObject, PIRP pIrp)
{
        DbgPrint("Enter HelloNTDDKDispatch\n");
        NTSTATUS status = STATUS_SUCCESS;

        pIrp->IoStatus.Status = status;
        pIrp->IoStatus.Information = 0;
        IoCompleteRequest(pIrp,IO_NO_INCREMENT);
        DbgPrint("Leave HelloNTDDKDispatch\n");
        return status;
}

NTSTATUS CreateDevice(PDRIVER_OBJECT pDriverObject)
{
        NTSTATUS status;
        PDEVICE_OBJECT pDevObj;
        PDEVICE_ENTENSION pDevExt;

        UNICODE_STRING devName;
        RtlInitUnicodeString(&devName,L"\\Device\\HelloNTDDK");

        status = IoCreateDevice(pDriverObject,sizeof(DEIVCE_EXTENSION),&devName,FILE_DEVICE_UNKNOWN,0,TRUE,&pDevObj);

        if (!NT_SUCCESS(status))
        {
                return status;
        }

        pDevObj->Flags |= DO_BUFFERED_IO;
        pDevExt = (PDEVICE_ENTENSION)pDevObj->DeviceExtension;
        pDevExt->pDevice = pDevObj;
        pDevExt->ustrDeviceName = devName;

        UNICODE_STRING symLinkName;
        RtlInitUnicodeString(&symLinkName,L"\\??\\HelloNTDDK");
        pDevExt->ustrSymLinkName = symLinkName;
        status = IoCreateSymbolicLink(&symLinkName,&devName);
        if (!NT_SUCCESS(status))
        {
                IoDeleteDevice(pDevObj);
                return status;
        }

        return STATUS_SUCCESS;
}

NTSTATUS CreateDevice2(PDRIVER_OBJECT pDriverObject)
{
        NTSTATUS status;
        PDEVICE_OBJECT pDevObj;
        PDEVICE_ENTENSION pDevExt;

        UNICODE_STRING devName;
        RtlInitUnicodeString(&devName,L"\\Device\\HelloNTDDK2");

        status = IoCreateDevice(pDriverObject,sizeof(DEIVCE_EXTENSION),&devName,FILE_DEVICE_UNKNOWN,0,TRUE,&pDevObj);

        if (!NT_SUCCESS(status))
        {
                return status;
        }

        pDevObj->Flags |= DO_BUFFERED_IO;
        pDevExt = (PDEVICE_ENTENSION)pDevObj->DeviceExtension;
        pDevExt->pDevice = pDevObj;
        pDevExt->ustrDeviceName = devName;

        UNICODE_STRING symLinkName;
        RtlInitUnicodeString(&symLinkName,L"\\??\\HelloNTDDK2");
        pDevExt->ustrSymLinkName = symLinkName;
        status = IoCreateSymbolicLink(&symLinkName,&devName);
        if (!NT_SUCCESS(status))
        {
                IoDeleteDevice(pDevObj);
                return status;
        }

        return STATUS_SUCCESS;
}

我也来看看各大牛的答案