/// <summary>
/// Get free space for a partition
/// </summary>
/// <param name="inp">The DeviceID for the partition</param>
/// <param name="partition">Reference to the partition instance</param>
private void GetFreeSpace(string inp, ref HDDPartition partition)
{
ManagementObjectSearcher getspace = new ManagementObjectSearcher("Select * from Win32_LogicalDisk Where DeviceID='" + inp + "'");
foreach (ManagementObject drive in getspace.Get())
{
if (drive["DeviceID"].ToString() == inp)
{
partition.FreeSpace = Convert.ToUInt64(drive["FreeSpace"]);
partition.TotalSpace = Convert.ToUInt64(drive["Size"]);
partition.FreeSapceInPercent = partition.FreeSpace * 100 / partition.TotalSpace;
partition.FileSystem = Convert.ToString(drive["FileSystem"]);
}
}
}
/// <summary>
/// Get HDD SMART Information for installed drives
/// Initial version from here: http://www.know24.net/blog/C+WMI+HDD+SMART+Information.aspx
/// </summary>
/// <returns></returns>
public Dictionary<int, HDD> GetHddSmartInformation()
{
// retrieve list of drives on computer (this will return both HDD's and CDROM's and Virtual CDROM's)
var result = new Dictionary<int, HDD>();
try
{
var wdSearcher = new ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive");
// extract model and interface information
int iDriveIndex = 0;
foreach (ManagementObject drive in wdSearcher.Get())
{
var hdd = new HDD();
hdd.Model = drive["Model"].ToString().Trim();
hdd.Type = drive["InterfaceType"].ToString().Trim();
hdd.Firmware = drive["FirmwareRevision"].ToString().Trim();
hdd.TotalSize = Convert.ToUInt64(drive["Size"]);
result.Add(iDriveIndex, hdd);
iDriveIndex++;
// Get Partitions
string DiskName = "Disk " + drive["Index"].ToString() + " : " + drive["Caption"].ToString().Replace(" ATA Device", "") +
" (" + Math.Round(Convert.ToDouble(drive["Size"]) / 1073741824, 1) + " GB)";
int ObjCount = Convert.ToInt16(drive["Partitions"]);
ManagementObjectSearcher partitions = new ManagementObjectSearcher("Select * From Win32_DiskPartition Where DiskIndex='" + drive["Index"].ToString() + "'");
foreach (ManagementObject part in partitions.Get())
{
HDDPartition p = new HDDPartition();
p.PartitionName = "Partition " + part["Index"].ToString();
string PartName = part["DeviceID"].ToString();
if (part["Bootable"].ToString() == "True" && part["BootPartition"].ToString() == "True")
{
p.DiskName = "Recovery";
p.TotalSpace = Convert.ToUInt64(part["Size"]);
}
else
{
ManagementObjectSearcher getdisks = new ManagementObjectSearcher("Select * From Win32_LogicalDiskToPartition Where ");
p.DriveLetter = this.GetPartitionName(PartName);
GetFreeSpace(p.DriveLetter, ref p);
p.DiskName = "Local Disk (" + p.DriveLetter + ")";
}
hdd.Partitions.Add(p);
}
}
var pmsearcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
// retrieve hdd serial number
iDriveIndex = 0;
foreach (ManagementObject drive in pmsearcher.Get())
{
// because all physical media will be returned we need to exit
// after the hard drives serial info is extracted
if (iDriveIndex >= result.Count)
break;
result[iDriveIndex].Serial = drive["SerialNumber"] == null ? "None" : drive["SerialNumber"].ToString().Trim();
iDriveIndex++;
}
// get wmi access to hdd
var searcher = new ManagementObjectSearcher("Select * from Win32_DiskDrive");
searcher.Scope = new ManagementScope(@"\root\wmi");
// check if SMART reports the drive is failing
searcher.Query = new ObjectQuery("Select * from MSStorageDriver_FailurePredictStatus");
iDriveIndex = 0;
foreach (ManagementObject drive in searcher.Get())
{
result[iDriveIndex].IsOK = (bool)drive.Properties["PredictFailure"].Value == false;
iDriveIndex++;
}
// retrive attribute flags, value worste and vendor data information
// MSStorageDriver_ATAPISmartData
// MSStorageDriver_FailurePredictData
searcher.Query = new ObjectQuery("Select * from MSStorageDriver_ATAPISmartData");
iDriveIndex = 0;
foreach (ManagementObject data in searcher.Get())
{
Byte[] bytes = (Byte[])data.Properties["VendorSpecific"].Value;
for (int i = 0; i < 30; ++i)
{
try
{
int id = bytes[i * 12 + 2];
int flags = bytes[i * 12 + 4]; // least significant status byte, +3 most significant byte, but not used so ignored.
//bool advisory = (flags & 0x1) == 0x0;
bool failureImminent = (flags & 0x1) == 0x1;
//bool onlineDataCollection = (flags & 0x2) == 0x2;
int value = bytes[i * 12 + 5];
int worst = bytes[i * 12 + 6];
int vendordata = BitConverter.ToInt32(bytes, i * 12 + 7);
if (id == 0) continue;
var attr = result[iDriveIndex].Attributes[id];
attr.Current = value;
attr.Worst = worst;
attr.Data = vendordata;
attr.IsOK = failureImminent == false;
}
catch
{
// given key does not exist in attribute collection (attribute not in the dictionary of attributes)
}
}
iDriveIndex++;
}
// retreive threshold values foreach attribute
searcher.Query = new ObjectQuery("Select * from MSStorageDriver_FailurePredictThresholds");
iDriveIndex = 0;
foreach (ManagementObject data in searcher.Get())
{
Byte[] bytes = (Byte[])data.Properties["VendorSpecific"].Value;
for (int i = 0; i < 30; ++i)
{
try
{
int id = bytes[i * 12 + 2];
int thresh = bytes[i * 12 + 3];
if (id == 0) continue;
var attr = result[iDriveIndex].Attributes[id];
attr.Threshold = thresh;
}
catch
{
// given key does not exist in attribute collection (attribute not in the dictionary of attributes)
}
}
iDriveIndex++;
}
}
catch (ManagementException ex)
{
// Log-Exception
DependencyFactory.Resolve<ILoggingService>(ServiceNames.LoggingService).LogException("WmiHardwareInfoService: Fehler bei der Ermittlung der S.M.A.R.T-Informationen", ex);
// Show exception
DependencyFactory.Resolve<IExceptionReporterService>(ServiceNames.ExceptionReporterService).ReportException(ex);
}
return result;
}
