大家好，又见面了，我是你们的朋友全栈君。
新买来的硬盘是未初始化的，以我的理解就是没有引导扇区的，通常是没有MBR，如下图磁盘1，右边有大小，但显示“未分配”，
左边显示“没有初始化”， 点鼠标右键就可以【初始化磁盘】。
初始化时可以选择MBR和GPT， MBR方式顶多支持2T硬盘的。
初始化后
初始化后可以新建简单卷了，之前是不行的：
CreateDisk(1, 3) 就是把磁盘1分为3个分区
奇怪，如果只分1个区，就是自动以NTFS格式化掉， 而分3个区，还会提示是否格式化。
如果想回到刚买回来的空白状态怎么办呢？ 用DestroyDisk()就可以了
代码：
CPP：CMDiskManager.cpp
代码语言：javascript复制#include "stdafx.h"
#include "CMDiskManager.h"
CMDiskManager::CMDiskManager(){}
//获取磁盘大小,单位是MB
int CMDiskManager::GetDiskSize(DWORD vDiskNo)
{
HANDLE hDevice; // handle to the drive to be examined
BOOL bResult; // results flag
DWORD junk; // discard results
char diskPath[256]; //磁盘内部路径
//生成磁盘内部路径
sprintf_s(diskPath, "\\.\PhysicalDrive%d", vDiskNo);
hDevice = CreateFile(TEXT(diskPath), // drive 或者 用"\\.\PhysicalDrive0" 代表第一块磁盘
GENERIC_READ, // no access to the drive
FILE_SHARE_READ | // share mode
FILE_SHARE_WRITE,
NULL, // default security attributes
OPEN_EXISTING, // disposition
0, // file attributes
NULL); // do not copy file attributes
if (hDevice == INVALID_HANDLE_VALUE) // cannot open the drive
{
return (FALSE);
}
GET_LENGTH_INFORMATION pdg;
bResult = DeviceIoControl(hDevice, // device to be queried
IOCTL_DISK_GET_LENGTH_INFO, // operation to perform
NULL, 0, // no input buffer
&pdg, sizeof(pdg), // output buffer
&junk, // # bytes returned
(LPOVERLAPPED)NULL); // synchronous I/O
CloseHandle(hDevice);
/* INT64 nUseSize = disk_len.Length.QuadPart;
INT64 sizeGB = nUseSize / 1014 / 1024 / 1024;
CString szSize;
szSize.Format(L"C盘大小 %I64d GB", sizeGB);
*/
int MB = pdg.Length.QuadPart >> 20;
//CString s;
//s.Format("C盘大小 %f GB", MB/1024.0);
//AfxMessageBox(s, 0, MB_OK);
//float x = (float) MB ;
return MB ;
}
/*
获取磁盘分区个数
vDiskNo:磁盘序号
*/
int CMDiskManager::GetPartNum(DWORD vDiskNo)
{
char diskPath[256]; //磁盘内部路径
//生成磁盘内部路径
sprintf_s(diskPath, "\\.\PhysicalDrive%d", vDiskNo);
HANDLE hDevice; //硬盘句柄 handle to the drive to be examined
BOOL result; //结果标志 results flag
DWORD readed; // discard results
hDevice = CreateFile(
diskPath,
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, //default security attributes
OPEN_EXISTING, // disposition
0, // file attributes
NULL
);
if (hDevice == INVALID_HANDLE_VALUE) // cannot open the drive
{
fprintf(stderr, "CreateFile() Error: %ldn", GetLastError());
return int(-1);
}
DRIVE_LAYOUT_INFORMATION_EX* dl;
DWORD tSize = 0x4000; // sizeof(DRIVE_LAYOUT_INFORMATION_EX) * 10;
dl = (DRIVE_LAYOUT_INFORMATION_EX*)malloc(tSize);
if (NULL == dl)
{
(void)CloseHandle(hDevice);
return (int)-2;
}
result = DeviceIoControl(
hDevice,
IOCTL_DISK_GET_DRIVE_LAYOUT_EX,
NULL,
0,
dl,
tSize,
&readed,
NULL
);
if (!result)
{
fprintf(stderr, "IOCTL_DISK_GET_DRIVE_LAYOUT_EX Error: %ldn", GetLastError());
(void)CloseHandle(hDevice);
return int(-3);
}
CString tPartitionStyle = "RAW";
switch (dl->PartitionStyle){
case 0:
tPartitionStyle = "MBR";
break;
case 1:
tPartitionStyle = "GPT";
break;
}
//printf("dl->PartitionCount = %d", dl->PartitionCount);
TRACE("dl->PartitionCount = %d, tPartitionStyle:%s n", dl->PartitionCount, tPartitionStyle.GetBuffer());
//printf("dl->PartitionCount = %d", dl->PartitionCount);
int tRet = dl->PartitionCount/4;
//TRACE("dl->PartitionCount tRet = %d", tRet);
free(dl);
(void)CloseHandle(hDevice);
return tRet;
}
//读MBR信息
BOOL CMDiskManager::ReadMBR(int vDiskNo, LPVOID *pBuffer)
{
HANDLE hDevice;
DWORD dwSize;
DWORD dwOverRead;
BOOL bRet = TRUE;
char diskPath[256]; //磁盘内部路径
//生成磁盘内部路径
sprintf_s(diskPath, "\\.\PhysicalDrive%d", vDiskNo);
hDevice = CreateFile(TEXT(diskPath),
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL);
if (hDevice == INVALID_HANDLE_VALUE) {
TRACE("Open \\.\PhysicalDrive failed. Error=%un", GetLastError());
return FALSE;
}
if (!DeviceIoControl(hDevice, FSCTL_LOCK_VOLUME, NULL, 0, NULL, 0, &dwSize, NULL)) {
CloseHandle(hDevice);
TRACE("FSCTL_LOCK_VOLUME \\.\PhysicalDrive0 failed. Error=%un", GetLastError());
return FALSE;
}
DISK_GEOMETRY Geometry;
if (!DeviceIoControl(hDevice, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0, &Geometry, sizeof(DISK_GEOMETRY), &dwSize, NULL)) {
bRet = FALSE;
TRACE("IOCTL_DISK_GET_DRIVE_GEOMETRY \\.\PhysicalDrive0 failed. Error=%un", GetLastError());
goto _out;
}
*pBuffer = (LPVOID)GlobalAlloc(GPTR, Geometry.BytesPerSector);
if (*pBuffer) {
if (!ReadFile(hDevice, *pBuffer, Geometry.BytesPerSector, &dwOverRead, NULL)) {
printf("ReadFile \\.\PhysicalDrive %u bytes failed. Error=%un", Geometry.BytesPerSector, GetLastError());
bRet = FALSE;
}
}
_out:
DeviceIoControl(hDevice, FSCTL_UNLOCK_VOLUME, NULL, 0, NULL, 0, &dwSize, NULL);
CloseHandle(hDevice);
return bRet;
}
/*
获取磁盘分区信息
vDiskNo:磁盘序号
*/
DWORD CMDiskManager::GetLayoutInfo(DWORD vDiskNo)
{
char diskPath[256]; //磁盘内部路径
//生成磁盘内部路径
sprintf_s(diskPath, "\\.\PhysicalDrive%d", vDiskNo);
HANDLE hDevice; //硬盘句柄 handle to the drive to be examined
BOOL result; //结果标志 results flag
DWORD readed; // discard results
hDevice = CreateFile(
diskPath,
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, //default security attributes
OPEN_EXISTING, // disposition
0, // file attributes
NULL
);
if (hDevice == INVALID_HANDLE_VALUE) // cannot open the drive
{
fprintf(stderr, "CreateFile() Error: %ldn", GetLastError());
return DWORD(-1);
}
DRIVE_LAYOUT_INFORMATION_EX* dl;
DWORD tSize = 0x4000; // sizeof(DRIVE_LAYOUT_INFORMATION_EX) * 10;
dl = (DRIVE_LAYOUT_INFORMATION_EX*)malloc(tSize);
if (NULL == dl)
{
(void)CloseHandle(hDevice);
return (WORD)-1;
}
result = DeviceIoControl(
hDevice,
IOCTL_DISK_GET_DRIVE_LAYOUT_EX,
NULL,
0,
dl,
tSize,
&readed,
NULL
);
if (!result)
{
fprintf(stderr, "IOCTL_DISK_GET_DRIVE_LAYOUT_EX Error: %ldn", GetLastError());
(void)CloseHandle(hDevice);
return DWORD(-1);
}
CString tPartitionStyle = "RAW";
switch (dl->PartitionStyle){
case 0:
tPartitionStyle = "MBR";
break;
case 1:
tPartitionStyle = "GPT";
break;
}
//printf("dl->PartitionCount = %d", dl->PartitionCount);
TRACE("dl->PartitionCount = %d, tPartitionStyle:%s", dl->PartitionCount, tPartitionStyle.GetBuffer());
free(dl);
(void)CloseHandle(hDevice);
return 0;
}
/*
初始化磁盘，创建分区
vDiskNo:磁盘序号，千万要避开系统盘，系统盘一般是0
vPartNum:分区数，只要1个分区就可以了
*/
DWORD CMDiskManager::CreateDisk(DWORD vDiskNo, WORD vPartNum)
{
printf("准备CreateDisk, vDiskNo=%d, vPartNum=%d n", vDiskNo, vPartNum);
//第0块磁盘是系统盘，不能格式化掉！！！但不排除某些情况下新插入的移动硬盘会是第0块磁盘
if (0 == vDiskNo){
printf("第0块磁盘是系统盘，不能格式化掉n");
return 0;
}
HANDLE hDevice; //硬盘句柄 handle to the drive to be examined
BOOL result; //结果标志 results flag
DWORD readed; // discard results
DWORD ret;
WORD i;
char diskPath[256]; //磁盘内部路径
DISK_GEOMETRY pdg;
DWORD sectorSize; //扇区大小
DWORD signature; //签名
LARGE_INTEGER diskSize; //磁盘大小
LARGE_INTEGER partSize; //分区大小
BYTE actualPartNum; //实际上的分区数
DWORD layoutStructSize; //
DRIVE_LAYOUT_INFORMATION_EX *dl; //磁盘分区信息
CREATE_DISK newDisk; //创建磁盘（初始化？）
//生成磁盘内部路径
sprintf_s(diskPath, "\\.\PhysicalDrive%d", vDiskNo);
actualPartNum = 4;
if (vPartNum > actualPartNum)
{
printf("vPartNum > 4n");
return (WORD)-1;
}
hDevice = CreateFile(
diskPath,
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, //default security attributes
OPEN_EXISTING, // disposition
0, // file attributes
NULL
);
if (hDevice == INVALID_HANDLE_VALUE) // cannot open the drive
{
fprintf(stderr, "CreateFile() Error: %ldn", GetLastError());
return DWORD(-1);
}
// Create primary partition MBR
//创建主分区的MBR
printf("创建主分区的MBRn");
newDisk.PartitionStyle = PARTITION_STYLE_MBR;
signature = (DWORD)time(0); // 原为time(NULL), get signature from current time
newDisk.Mbr.Signature = signature;
result = DeviceIoControl(
hDevice,
IOCTL_DISK_CREATE_DISK,
&newDisk,
sizeof(CREATE_DISK),
NULL,
0,
&readed,
NULL
);
if (!result)
{
fprintf(stderr, "IOCTL_DISK_CREATE_DISK Error: %ldn", GetLastError());
(void)CloseHandle(hDevice);
return DWORD(-1);
}
//fresh the partition table
//刷新分区表
printf("刷新分区表n");
result = DeviceIoControl(
hDevice,
IOCTL_DISK_UPDATE_PROPERTIES,
NULL,
0,
NULL,
0,
&readed,
NULL
);
if (!result)
{
fprintf(stderr, "IOCTL_DISK_UPDATE_PROPERTIES Error: %ldn", GetLastError());
(void)CloseHandle(hDevice);
return DWORD(-1);
}
//Now create the partitions
//现在创建分区
ret = GetDriveGeometry(vDiskNo, &pdg);
if ((DWORD)-1 == ret)
{
return ret;
}
//扇区大小
sectorSize = pdg.BytesPerSector;
diskSize.QuadPart = pdg.Cylinders.QuadPart * pdg.TracksPerCylinder *
pdg.SectorsPerTrack * pdg.BytesPerSector; //calculate the disk size;
partSize.QuadPart = diskSize.QuadPart / vPartNum;
//分区结构大小
layoutStructSize = sizeof(DRIVE_LAYOUT_INFORMATION_EX) (actualPartNum - 1) * sizeof(PARTITION_INFORMATION_EX);
dl = (DRIVE_LAYOUT_INFORMATION_EX*)malloc(layoutStructSize);
if (NULL == dl)
{
(void)CloseHandle(hDevice);
return (WORD)-1;
}
dl->PartitionStyle = (DWORD)PARTITION_STYLE_MBR;
dl->PartitionCount = actualPartNum;
dl->Mbr.Signature = signature;
//clear the unused partitions
//清除未用的分区
printf("清除未用的分区n");
for (i = 0; i < actualPartNum; i ){
dl->PartitionEntry[i].RewritePartition = 1;
dl->PartitionEntry[i].Mbr.PartitionType = PARTITION_ENTRY_UNUSED;
}
//set the profile of the partitions
for (i = 0; i < vPartNum; i ){
dl->PartitionEntry[i].PartitionStyle = PARTITION_STYLE_MBR;
dl->PartitionEntry[i].StartingOffset.QuadPart =
(partSize.QuadPart * i) ((LONGLONG)(pdg.SectorsPerTrack) * (LONGLONG)(pdg.BytesPerSector)); //32256
dl->PartitionEntry[i].PartitionLength.QuadPart = partSize.QuadPart;
dl->PartitionEntry[i].PartitionNumber = i 1;
dl->PartitionEntry[i].RewritePartition = TRUE;
dl->PartitionEntry[i].Mbr.PartitionType = PARTITION_IFS;
dl->PartitionEntry[i].Mbr.BootIndicator = FALSE;
dl->PartitionEntry[i].Mbr.RecognizedPartition = TRUE;
dl->PartitionEntry[i].Mbr.HiddenSectors =
pdg.SectorsPerTrack (DWORD)((partSize.QuadPart / sectorSize) * i);
}
//execute the layout
result = DeviceIoControl(
hDevice,
IOCTL_DISK_SET_DRIVE_LAYOUT_EX,
dl,
layoutStructSize,
NULL,
0,
&readed,
NULL
);
if (!result)
{
fprintf(stderr, "IOCTL_DISK_SET_DRIVE_LAYOUT_EX Error: %ldn", GetLastError());
free(dl);
(void)CloseHandle(hDevice);
return DWORD(-1);
}
//fresh the partition table
printf("刷新分区表n");
result = DeviceIoControl(
hDevice,
IOCTL_DISK_UPDATE_PROPERTIES,
NULL,
0,
NULL,
0,
&readed,
NULL
);
if (!result)
{
fprintf(stderr, "IOCTL_DISK_UPDATE_PROPERTIES Error: %ldn", GetLastError());
free(dl);
(void)CloseHandle(hDevice);
return DWORD(-1);
}
free(dl);
(void)CloseHandle(hDevice);
printf("CreateDisk完成n");
Sleep(3000); //wait the operations take effect
return 0;
}
//获取磁盘几何信息
BOOL CMDiskManager::GetDriveGeometry(DWORD vDiskNo, DISK_GEOMETRY *pdg)
{
HANDLE hDevice; // handle to the drive to be examined
BOOL bResult; // results flag
DWORD junk; // discard results
char diskPath[256]; //磁盘内部路径
sprintf_s(diskPath, "\\.\PhysicalDrive%d", vDiskNo);
hDevice = CreateFile(TEXT(diskPath), // drive
0, // no access to the drive
FILE_SHARE_READ | // share mode
FILE_SHARE_WRITE,
NULL, // default security attributes
OPEN_EXISTING, // disposition
0, // file attributes
NULL); // do not copy file attributes
if (hDevice == INVALID_HANDLE_VALUE) // cannot open the drive
{
return (FALSE);
}
bResult = DeviceIoControl(hDevice, // device to be queried
IOCTL_DISK_GET_DRIVE_GEOMETRY, // operation to perform
NULL, 0, // no input buffer
pdg, sizeof(*pdg), // output buffer
&junk, // # bytes returned
(LPOVERLAPPED)NULL); // synchronous I/O
CloseHandle(hDevice);
return (bResult);
}
/******************************************************************************
* Function: delete the partition layout of the disk
删除磁盘分区信息（恢复出厂设置）
* input: disk, disk name
* output: N/A
* return: Succeed, 0
* Fail, -1
******************************************************************************/
DWORD CMDiskManager::DestroyDisk(DWORD vDiskNo)
{
if (0 == vDiskNo){
//系统盘是0号盘，为了安全，不能删除
return 0;
}
HANDLE hDevice; // handle to the drive to be examined
BOOL result; // results flag
DWORD readed; // discard results
CHAR diskPath[256];
sprintf(diskPath, "\\.\PhysicalDrive%d", vDiskNo);
hDevice = CreateFile(
diskPath, // drive to open
GENERIC_READ | GENERIC_WRITE, // access to the drive
FILE_SHARE_READ | FILE_SHARE_WRITE, //share mode
NULL, // default security attributes
OPEN_EXISTING, // disposition
0, // file attributes
NULL // do not copy file attribute
);
if (hDevice == INVALID_HANDLE_VALUE) // cannot open the drive
{
fprintf(stderr, "CreateFile() Error: %ldn", GetLastError());
return DWORD(-1);
}
result = DeviceIoControl(
hDevice, // handle to device
IOCTL_DISK_DELETE_DRIVE_LAYOUT, // dwIoControlCode
NULL, // lpInBuffer
0, // nInBufferSize
NULL, // lpOutBuffer
0, // nOutBufferSize
&readed, // number of bytes returned
NULL // OVERLAPPED structure
);
if (!result)
{
//fprintf(stderr, "IOCTL_DISK_DELETE_DRIVE_LAYOUT Error: %ldn", GetLastError());
(void)CloseHandle(hDevice);
return DWORD(-1);
}
//fresh the partition table
result = DeviceIoControl(
hDevice,
IOCTL_DISK_UPDATE_PROPERTIES,
NULL,
0,
NULL,
0,
&readed,
NULL
);
if (!result)
{
fprintf(stderr, "IOCTL_DISK_UPDATE_PROPERTIES Error: %ldn", GetLastError());
(void)CloseHandle(hDevice);
return DWORD(-1);
}
(void)CloseHandle(hDevice);
return 0;
}
/******************************************************************************
* Function:快速格式化某个磁盘，文件系统NTFS，
如果在CreateDisk()创建磁盘后，磁盘的文件系统是RAW的话，才需要调用该函数
* input: disk, disk name
* output: N/A
* return: Succeed, 0
* Fail, 1
******************************************************************************/
DWORD CMDiskManager::FormatVolume(CHAR letter)
{
DWORD ret;
CHAR cmd[64];
sprintf(cmd, "format %c: /FS:NTFS /Q /Y", letter);
ret = (DWORD)system(cmd);
return ret;
}
//获取第dwNum个磁盘的信息
void CMDiskManager::GetDiskInfo(DWORD &dwNum, CString chDriveInfo[])
{
DWORD DiskCount = 0;
//利用GetLogicalDrives()函数可以获取系统中逻辑驱动器的数量，函数返回的是一个32位无符号整型数据。
DWORD DiskInfo = GetLogicalDrives();
//通过循环操作查看每一位数据是否为1，如果为1则磁盘为真,如果为0则磁盘不存在。
while (DiskInfo)
{
//通过位运算的逻辑与操作，判断是否为1
Sleep(10);
if (DiskInfo & 1)
{
DiskCount ;
}
DiskInfo = DiskInfo >> 1;//通过位运算的右移操作保证每循环一次所检查的位置向右移动一位。*/
}
if (dwNum < DiskCount)
{
return;//实际的磁盘数目大于dwNum
}
dwNum = DiskCount;//将磁盘分区数量保存
//-------------------------------------------------------------------//
//通过GetLogicalDriveStrings()函数获取所有驱动器字符串信息长度
int DSLength = GetLogicalDriveStrings(0, NULL);
CHAR* DStr = new CHAR[DSLength];
memset(DStr, 0, DSLength);
//通过GetLogicalDriveStrings将字符串信息复制到堆区数组中,其中保存了所有驱动器的信息。
GetLogicalDriveStrings(DSLength, DStr);
int DType;
int si = 0;
BOOL fResult;
unsigned _int64 i64FreeBytesToCaller;
unsigned _int64 i64TotalBytes;
unsigned _int64 i64FreeBytes;
//读取各驱动器信息，由于DStr内部数据格式是A:NULLB:NULLC:NULL，所以DSLength/4可以获得具体大循环范围
for (int i = 0; i<DSLength / 4; i)
{
Sleep(10);
CString strdriver = DStr i * 4;
CString strTmp, strTotalBytes, strFreeBytes;
DType = GetDriveType(strdriver);//GetDriveType函数，可以获取驱动器类型，参数为驱动器的根目录
switch (DType)
{
case DRIVE_FIXED:
{
strTmp.Format(_T("本地磁盘"));
}
break;
case DRIVE_CDROM:
{
strTmp.Format(_T("DVD驱动器"));
}
break;
case DRIVE_REMOVABLE:
{
strTmp.Format(_T("可移动磁盘"));
}
break;
case DRIVE_REMOTE:
{
strTmp.Format(_T("网络磁盘"));
}
break;
case DRIVE_RAMDISK:
{
strTmp.Format(_T("虚拟RAM磁盘"));
}
break;
case DRIVE_UNKNOWN:
{
strTmp.Format(_T("虚拟RAM未知设备"));
}
break;
default:
strTmp.Format(_T("未知设备"));
break;
}
//GetDiskFreeSpaceEx函数，可以获取驱动器磁盘的空间状态,函数返回的是个BOOL类型数据
fResult = GetDiskFreeSpaceEx(strdriver,
(PULARGE_INTEGER)&i64FreeBytesToCaller,
(PULARGE_INTEGER)&i64TotalBytes,
(PULARGE_INTEGER)&i64FreeBytes);
if (fResult)
{
strTotalBytes.Format(_T("磁盘总容量%.2fMB"), (float)i64TotalBytes / 1024 / 1024);
strFreeBytes.Format(_T("磁盘剩余空间%.2fMB"), (float)i64FreeBytesToCaller / 1024 / 1024);
}
else
{
strTotalBytes.Format(_T(""));
strFreeBytes.Format(_T(""));
}
chDriveInfo[i] = strTmp _T("(") strdriver _T("):") strTotalBytes ", " strFreeBytes;
si = 4;
}
}
/******************************************************************************
* Function: get disk's physical number from its drive letter
根据逻辑盘符找到物理硬盘号
* e.g. C-->0 (C: is on disk0)
* input: letter, drive letter
* output: N/A
* return: Succeed, disk number
* Fail, -1
******************************************************************************/
//根据逻辑盘符找到物理硬盘号
DWORD CMDiskManager::GetPhysicalDriveFromPartitionLetter(CHAR letter)
{
HANDLE hDevice; // handle to the drive to be examined
BOOL result; // results flag
DWORD readed; // discard results
STORAGE_DEVICE_NUMBER number; //use this to get disk numbers
CHAR path[256];
sprintf(path, "\\.\%c:", letter);
hDevice = CreateFile(path, // drive to open
GENERIC_READ | GENERIC_WRITE, // access to the drive
FILE_SHARE_READ | FILE_SHARE_WRITE, //share mode
NULL, // default security attributes
OPEN_EXISTING, // disposition
0, // file attributes
NULL); // do not copy file attribute
if (hDevice == INVALID_HANDLE_VALUE) // cannot open the drive
{
fprintf(stderr, "CreateFile() Error: %ldn", GetLastError());
return DWORD(-1);
}
result = DeviceIoControl(
hDevice, // handle to device
IOCTL_STORAGE_GET_DEVICE_NUMBER, // dwIoControlCode
NULL, // lpInBuffer
0, // nInBufferSize
&number, // output buffer
sizeof(number), // size of output buffer
&readed, // number of bytes returned
NULL // OVERLAPPED structure
);
if (!result) // fail
{
fprintf(stderr, "IOCTL_STORAGE_GET_DEVICE_NUMBER Error: %ldn", GetLastError());
(void)CloseHandle(hDevice);
return (DWORD)-1;
}
//printf("%d %d %dnn", number.DeviceType, number.DeviceNumber, number.PartitionNumber);
(void)CloseHandle(hDevice);
return number.DeviceNumber;
}
/******************************************************************************
* Function: get disk's drive letters from physical number
获取一个物理硬盘上的所有盘符
* e.g. 0-->{C, D, E} (disk0 has 3 drives, C:, D: and E:)
* input: vDiskNo, disk's physical number
* output: letters, letters array
* return: Succeed, the amount of letters
* Fail, -1
******************************************************************************/
CString CMDiskManager::GetPartitionLetterFromPhysicalDrive(DWORD vDiskNo)
{
DWORD mask;
DWORD driveType;
DWORD bmLetters;
DWORD diskNumber;
CHAR path[256];
CHAR letter;
DWORD letterNum;
WORD i;
CHAR *p;
CString tRet = "";
bmLetters = GetLogicalDrives();
if (0 == bmLetters)
{
return "";
}
letterNum = 0;
for (i = 0; i < sizeof(DWORD) * 8; i )
{
mask = 0x1u << i;
if ((mask & bmLetters) == 0) //get one letter
{
continue;
}
letter = (CHAR)(0x41 i); //ASCII change
sprintf(path, "%c:\", letter);
driveType = GetDriveType(path);
if (driveType != DRIVE_FIXED)
{
bmLetters &= ~mask; //clear this bit
continue;
}
diskNumber = GetPhysicalDriveFromPartitionLetter(letter);
if (diskNumber != vDiskNo)
{
bmLetters &= ~mask; //clear this bit
continue;
}
letterNum ;
}
//build the result
/*letters = (CHAR *)malloc(letterNum);
if (NULL == *letters)
{
return (DWORD)-1;
}
p = *letters;
*/
CString s;
for (i = 0; i < sizeof(DWORD) * 8; i )
{
mask = 0x1u << i;
if ((mask & bmLetters) == 0)
{
continue;
}
letter = (CHAR)(0x41 i); //ASCII change
s.Format("%c", letter);
if (!tRet.IsEmpty()){
tRet = ",";
}
tRet = s ":";
}
return tRet;
}头文件：CMDiskManager.h
代码语言：javascript复制#include <windows.h>
#include <winioctl.h>
#include <stdio.h>
#include "time.h"
#include <stdlib.h>
#include <tchar.h>
#pragma pack(1)
#define MAX_MBR_PARTITIONS 4
#define MBR_DISK_SIGNATURE_OFFSET 440
#define MBR_DISK_PPT_OFFSET 446
#define MBR_SIGNATURE_OFFSET 510
//
// MBR Partition Entry
//
typedef struct {
UINT8 BootIndicator;
UINT8 StartHead;
UINT8 StartSector;
UINT8 StartTrack;
UINT8 OSType;
UINT8 EndHead;
UINT8 EndSector;
UINT8 EndTrack;
UINT32 StartingLBA;
UINT32 SizeInLBA;
} MBR_PARTITION_RECORD;
//
// MBR Partition table
//
typedef struct {
UINT8 BootCode[440];
UINT32 UniqueMbrSignature;
UINT16 Unknown;
MBR_PARTITION_RECORD PartitionRecord[MAX_MBR_PARTITIONS];
UINT16 Signature;
} MASTER_BOOT_RECORD;
#pragma pack()
#define MBR_SIGNATURE 0xAA55
#define EXTENDED_DOS_PARTITION 0x05
#define EXTENDED_WINDOWS_PARTITION 0x0F
class CMDiskManager {
public:
CMDiskManager();
//获取磁盘几何
BOOL GetDriveGeometry(DWORD vDiskNo, DISK_GEOMETRY *pdg);
//获取磁盘大小,单位是MB
int GetDiskSize(DWORD vDiskNo);
/*
获取磁盘分区信息
vDiskNo:磁盘序号
*/
DWORD GetLayoutInfo(DWORD vDiskNo);
//读MBR信息
BOOL ReadMBR(int vDiskNo, LPVOID *pBuffer);
/*
获取磁盘分区个数
vDiskNo:磁盘序号
*/
int GetPartNum(DWORD vDiskNo);
/*
初始化磁盘，创建分区
vDiskNo:磁盘序号，千万要避开系统盘，系统盘一般是0
vPartNum:分区数，只要1个分区就可以了
*/
DWORD CreateDisk(DWORD vDiskNo, WORD vPartNum);
/*
回复磁盘到空白状态，删除MBR分区信息
*/
DWORD DestroyDisk(DWORD vDiskNo);
}; 如果CreateDisk之后文件系统格式还是RAW的，那么可以用这个：
代码语言：javascript复制/******************************************************************************
* Function:快速格式化某个磁盘，文件系统NTFS
* input: disk, disk name
* output: N/A
* return: Succeed, 0
* Fail, 1
******************************************************************************/
DWORD CMDiskManager::FormatVolume(CHAR letter)
{
DWORD ret;
CHAR cmd[64];
sprintf(cmd, "format %c: /FS:NTFS /Q /Y", letter);
ret = (DWORD)system(cmd);
return ret;
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