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我正在使用C#和pinvoke来读取/写入原始SD卡。我需要得到具有DeviceIoControl的总容量:deviceiocontrol和磁盘大小问题
[StructLayout(LayoutKind.Sequential)]
public struct DISK_GEOMETRY
{
public long Cylinders;
public int MediaType;
public int TracksPerCylinder;
public int SectorsPerTrack;
public int BytesPerSector;
public long DiskSize
{
get
{
return Cylinders * (long)TracksPerCylinder * (long)SectorsPerTrack * (long)BytesPerSector;
}
}
}
...
uint dummy;
DISK_GEOMETRY diskGeo = new DISK_GEOMETRY();
DeviceIoControl(safeHandle, EIOControlCode.DiskGetDriveGeometry, IntPtr.Zero, 0,
ref diskGeo, (uint)Marshal.SizeOf(typeof(DISK_GEOMETRY)), out dummy, IntPtr.Zero);
this.sectorSize = diskGeo.BytesPerSector;
this.bufferSize = this.sectorSize * 16384;
this.diskSize = diskGeo.DiskSize;
随着1吉布的SD卡,该diskGeo.DiskSize是1011709440.为什么?
非常感谢,这是我正在寻找的答案。我需要使用pinvoke擦除分区中的信息。最后一点:使用hexplorer,我可以读取/写入1073741824字节,整个1 GiB。 – ric 2009-12-18 06:12:39