如何动态刷新硬盘分区？急

Question

我在修改了分区表之后,比如将第二个逻辑分区隐藏了,但是每次必须重新启动才能看到结果,如何动态的刷新硬盘分区,不用重起就能将第二个逻辑分区隐藏?   请高手指点!!!!!!!  急等!!!!!!!

Answer 1

int
NT_Device_Dismount(char *pDeviceLetter,  int nForceFlag)
{        HANDLE hFile;
    UCHAR bRc;
        DWORD dwError = 0;
        int status;
    ULONG bytesReturned;
        char devicePath[256];
        //
        // Open the device
        //
        sprintf(devicePath, "\\\\.\\%s", pDeviceLetter);        hFile = CreateFile( devicePath,
                        GENERIC_READ | GENERIC_WRITE,
                        (FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE),
                NULL,
                OPEN_EXISTING,
                FILE_ATTRIBUTE_NORMAL|FILE_FLAG_NO_BUFFERING,
                NULL);
        if ( hFile == INVALID_HANDLE_VALUE ){
                if(nForceFlag == TRUE) {
                        //
                        //  Go ahead and remove the Device letter
                        //
                        NT_Remove_Device_Letter(pDeviceLetter);
                }
                dwError = GetLastError();
                SetLastError(dwError);
                return ( -1 );
        }        bRc = DeviceIoControl ( hFile,
                                        FSCTL_LOCK_VOLUME,
                                        NULL,
                                        0,
                                        NULL,
                                        0,
                                        &bytesReturned,
                                        NULL
                                        );        if ( bRc ) {                        //
                        //  Remove the Device letter
                        //
                        NT_Remove_Device_Letter(pDeviceLetter);                 //
                 //  syncronously flush file system cache before attempting 
dismount
                 //    to ensure the dismount doesn't need to schedule a  flush.
                 //
                (void) FlushFileBuffers(hFile);                //
                // Performing Ioctl dismount the volume
                //
                bRc = DeviceIoControl ( hFile,
                                        FSCTL_DISMOUNT_VOLUME,
                                        NULL,
                                        0,
                                        NULL,
                                                                0,
                                        &bytesReturned,
                                        NULL
                                        );                if ( !bRc ) {
                        dwError = GetLastError();
                        status = -1;
                } else {
                        dwError = 0;
                        status = 0;
                }                bRc = DeviceIoControl ( hFile,
                                FSCTL_UNLOCK_VOLUME,
                                NULL,
                                0,
                                NULL,
                                        0,
                                        &bytesReturned,
                                NULL
                                );                if ( !bRc ) {
                        dwError = GetLastError();
                        status = -1;
                }        } else {
                if(nForceFlag == TRUE) {
                        //
                        //  Go ahead and remove the Device letter
                        //
                        NT_Remove_Device_Letter(pDeviceLetter);
                }
                dwError = GetLastError();
                status = -1;
        }
        CloseHandle ( hFile );
        SetLastError(dwError);
        return ( status );}

Answer 2

很简单，主要是通过FSCTL_DISMOUNT_VOLUME来对分区进行卸载卷操作，这样盘符就会消失了。

Answer 3

FSCTL_MOUNT_VOLUME
动态加载一个卷，
你只能通过自己加载卷和卸载卷来显示隐藏分区。