1.1 --- a/Hardware/HDD/AbstractHarddrive.cs	Sat Oct 27 11:40:28 2012 +0000
     1.2 +++ b/Hardware/HDD/AbstractHarddrive.cs	Sun Oct 28 11:34:53 2012 +0000
     1.3 @@ -196,7 +196,7 @@
     1.4          DriveAttributeValue[] values = smart.ReadSmartData(handle, index);
     1.5  
     1.6          foreach (KeyValuePair<SmartAttribute, Sensor> keyValuePair in sensors) {
     1.7 -          SmartAttribute attribute = keyValuePair.Key;          
     1.8 +          SmartAttribute attribute = keyValuePair.Key;
     1.9            foreach (DriveAttributeValue value in values) {
    1.10              if (value.Identifier == attribute.Identifier) {
    1.11                Sensor sensor = keyValuePair.Value;
    1.12 @@ -210,11 +210,20 @@
    1.13          if (usageSensor != null) {
    1.14            long totalSize = 0;
    1.15            long totalFreeSpace = 0;
    1.16 +
    1.17            for (int i = 0; i < driveInfos.Length; i++) {
    1.18 -            totalSize += driveInfos[i].TotalSize;
    1.19 -            totalFreeSpace += driveInfos[i].TotalFreeSpace;
    1.20 +            if (!driveInfos[i].IsReady)
    1.21 +              continue;
    1.22 +            try {
    1.23 +              totalSize += driveInfos[i].TotalSize;
    1.24 +              totalFreeSpace += driveInfos[i].TotalFreeSpace;
    1.25 +            } catch (IOException) { } catch (UnauthorizedAccessException) { }
    1.26            }
    1.27 -          usageSensor.Value = 100.0f - (100.0f * totalFreeSpace) / totalSize;
    1.28 +          if (totalSize > 0) {
    1.29 +            usageSensor.Value = 100.0f - (100.0f * totalFreeSpace) / totalSize;
    1.30 +          } else {
    1.31 +            usageSensor.Value = null;
    1.32 +          }
    1.33          }
    1.34        }
    1.35