List every \Device\Harddiskvolume.?
I've tried Diskpart commands like "list" "volume" (no it's not that at all), "disk" and "partition"; but it still don't work.
\Device\Harddiskvolume0 seems to not be used, since \Device\Harddiskvolume1 means the first Windows' partition (aka "System Reserved") and \Device\Harddiskvolume2 is for C:.
So the question is: How to list every \Device\Harddiskvolume in Windows' 7 installation disk (for BCD editing) ?
I adapted @merle's answer by using the approach documented on MSDN.
It shows drives:
- without drive letters
- mounted to a folder
- with drive letters
Sample output:
DriveLetter DevicePath VolumeName
----------- ---------- ----------
\Device\HarddiskVolume5 \\?\Volume{a2b4c6d8-0000-0000-00000100000000000}\
E:\ \Device\HarddiskVolume9 \\?\Volume{a2b4c6d8-1234-1234-1234-123456789abc}\
C:\Mounted\My-Folder-Mount\ \Device\HarddiskVolume13 \\?\Volume{a2b4c6d8-1234-1234-1234-123456789abc}\
PowerShell script:
$signature = @'
[DllImport("kernel32.dll", SetLastError=true)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool GetVolumePathNamesForVolumeNameW([MarshalAs(UnmanagedType.LPWStr)] string lpszVolumeName,
[MarshalAs(UnmanagedType.LPWStr)] [Out] StringBuilder lpszVolumeNamePaths, uint cchBuferLength,
ref UInt32 lpcchReturnLength);
[DllImport("kernel32.dll", SetLastError = true)]
public static extern IntPtr FindFirstVolume([Out] StringBuilder lpszVolumeName,
uint cchBufferLength);
[DllImport("kernel32.dll", SetLastError = true)]
public static extern bool FindNextVolume(IntPtr hFindVolume, [Out] StringBuilder lpszVolumeName, uint cchBufferLength);
[DllImport("kernel32.dll", SetLastError = true)]
public static extern uint QueryDosDevice(string lpDeviceName, StringBuilder lpTargetPath, int ucchMax);
'@;
Add-Type -MemberDefinition $signature -Name Win32Utils -Namespace PInvoke -Using PInvoke,System.Text;
[UInt32] $lpcchReturnLength = 0;
[UInt32] $Max = 65535
$sbVolumeName = New-Object System.Text.StringBuilder($Max, $Max)
$sbPathName = New-Object System.Text.StringBuilder($Max, $Max)
$sbMountPoint = New-Object System.Text.StringBuilder($Max, $Max)
[IntPtr] $volumeHandle = [PInvoke.Win32Utils]::FindFirstVolume($sbVolumeName, $Max)
do {
$volume = $sbVolumeName.toString()
$unused = [PInvoke.Win32Utils]::GetVolumePathNamesForVolumeNameW($volume, $sbMountPoint, $Max, [Ref] $lpcchReturnLength);
$ReturnLength = [PInvoke.Win32Utils]::QueryDosDevice($volume.Substring(4, $volume.Length - 1 - 4), $sbPathName, [UInt32] $Max);
if ($ReturnLength) {
$DriveMapping = @{
DriveLetter = $sbMountPoint.toString()
VolumeName = $volume
DevicePath = $sbPathName.ToString()
}
Write-Output (New-Object PSObject -Property $DriveMapping)
}
else {
Write-Output "No mountpoint found for: " + $volume
}
} while ([PInvoke.Win32Utils]::FindNextVolume([IntPtr] $volumeHandle, $sbVolumeName, $Max));
Found a powershell script that lists the mounted volumes:
# Biuild System Assembly in order to call Kernel32:QueryDosDevice.
$DynAssembly = New-Object System.Reflection.AssemblyName('SysUtils')
$AssemblyBuilder = [AppDomain]::CurrentDomain.DefineDynamicAssembly($DynAssembly, [Reflection.Emit.AssemblyBuilderAccess]::Run)
$ModuleBuilder = $AssemblyBuilder.DefineDynamicModule('SysUtils', $False)
# Define [Kernel32]::QueryDosDevice method
$TypeBuilder = $ModuleBuilder.DefineType('Kernel32', 'Public, Class')
$PInvokeMethod = $TypeBuilder.DefinePInvokeMethod('QueryDosDevice', 'kernel32.dll', ([Reflection.MethodAttributes]::Public -bor [Reflection.MethodAttributes]::Static), [Reflection.CallingConventions]::Standard, [UInt32], [Type[]]@([String], [Text.StringBuilder], [UInt32]), [Runtime.InteropServices.CallingConvention]::Winapi, [Runtime.InteropServices.CharSet]::Auto)
$DllImportConstructor = [Runtime.InteropServices.DllImportAttribute].GetConstructor(@([String]))
$SetLastError = [Runtime.InteropServices.DllImportAttribute].GetField('SetLastError')
$SetLastErrorCustomAttribute = New-Object Reflection.Emit.CustomAttributeBuilder($DllImportConstructor, @('kernel32.dll'), [Reflection.FieldInfo[]]@($SetLastError), @($true))
$PInvokeMethod.SetCustomAttribute($SetLastErrorCustomAttribute)
$Kernel32 = $TypeBuilder.CreateType()
$Max = 65536
$StringBuilder = New-Object System.Text.StringBuilder($Max)
Get-WmiObject Win32_Volume | ? { $_.DriveLetter } | % {
$ReturnLength = $Kernel32::QueryDosDevice($_.DriveLetter, $StringBuilder, $Max)
if ($ReturnLength)
{
$DriveMapping = @{
DriveLetter = $_.DriveLetter
DevicePath = $StringBuilder.ToString()
}
New-Object PSObject -Property $DriveMapping
}
}
Source: http://www.morgantechspace.com/2014/11/Get-Volume-Path-from-Drive-Name-using-Powershell.html
Output looks like this:
DevicePath DriveLetter
---------- -----------
\Device\HarddiskVolume2 F:
\Device\HarddiskVolume7 J:
\Device\HarddiskVolume10 D:
\Device\HarddiskVolume12 E:
\Device\HarddiskVolume5 C: