Question

我想獲得有關基於驅動器盤符的磁盤的一些詳細信息，並且無法獲取給定卷的分區信息。

這就是我想：

var scope = new ManagementScope(@"\\localhost\ROOT\Microsoft\Windows\Storage"); 
var query = new ObjectQuery("Associators of {MSFT_Volume.DriveLetter='" + upperCaseDiskLetter + "'} WHERE RESULTCLASS = MSFT_Partition"); 

using (var partitionSearcher = new ManagementObjectSearcher(
    scope, 
    query)) 
{ 
    var partition = partitionSearcher.Get().Cast<ManagementBaseObject>().Single(); 

並得到此異常：

Exception thrown: 'System.Management.ManagementException' in System.Management.dll 

Additional information: Invalid object path 

也許我接近它錯了嗎？我想一個卷可能存在於多個分區上？但仍然 - 我應該得到的「關聯者」查詢返回一些結果，除非MSFT_PartitionToVolume由於某種原因不工作？

這就是我試圖收集：

using (var volumeSearcher = new ManagementObjectSearcher(
    @"\\localhost\ROOT\Microsoft\Windows\Storage", 
    $"SELECT Size, SizeRemaining, DriveType FROM MSFT_Volume WHERE DriveLetter='{ upperCaseDiskLetter }'")) 
{ 
    var volume = volumeSearcher.Get().Cast<ManagementBaseObject>().Single(); 

    result = new DiskProperties 
    { 
     LastRetrieved = DateTime.Now, 
     DriveType = GetDriveTypeDescription((UInt32)volume["DriveType"]), 
     FreeSpace = (UInt64)volume["SizeRemaining"], 
     PartitionSize = (UInt64)volume["Size"] 
    }; 
} 

var scope = new ManagementScope(@"\\localhost\ROOT\Microsoft\Windows\Storage"); 
var query = new ObjectQuery("Associators of {MSFT_Volume.DriveLetter='" + upperCaseDiskLetter + "'} WHERE RESULTCLASS = MSFT_Partition"); 

using (var partitionSearcher = new ManagementObjectSearcher(
    scope, 
    query)) 
{ 
    var partition = partitionSearcher.Get().Cast<ManagementBaseObject>().Single(); 

    using (var physicalDiskSearcher = new ManagementObjectSearcher(
       @"\\localhost\ROOT\Microsoft\Windows\Storage", 
       $"SELECT Size, Model, MediaType FROM MSFT_PhysicalDisk WHERE DeviceID='{ partition["DiskNumber"] }'")) 
    { 
     var physicalDisk = physicalDiskSearcher.Get().Cast<ManagementBaseObject>().Single(); 
     result.DiskSize = (UInt64)physicalDisk["Size"]; 
     result.Model = physicalDisk["Model"].ToString(); 
     result.IsSsd = 
      (UInt16)physicalDisk["MediaType"] == 4 || 
      SSDModelSubstrings.Any(substring => result.Model.ToLower().Contains(substring)); ; 

     return result; 
    } 
} 

Answer 1

我仍然不知道什麼是錯的associators查詢，但好像我忽略了一個很簡單的解決方案 - MSFT_Partition也有一個DriveLetter列...

using (var partitionSearcher = new ManagementObjectSearcher(
    @"\\localhost\ROOT\Microsoft\Windows\Storage", 
    $"SELECT DiskNumber FROM MSFT_Partition WHERE DriveLetter='{upperCaseDiskLetter}'")) 

注意雖然這不會爲VHD驅動器填充。