在 PowerShell 脚本中使用 Diskpart 将不允许脚本重复使用驱动器号

Question

我构建了一个脚本，该脚本使用Diskpart挂载（附加）VHD，清除一些系统文件，然后卸载（分离）它。它使用 foreach 循环，并假设使用相同的驱动器号清理多个 VHD。但是，在第一个 VHD 之后它失败了。我还注意到，当我尝试使用 diskpart 手动附加 VHD 时，diskpart 成功，磁盘管理器显示具有正确驱动器号的磁盘，但在同一个 PoSH 实例中，我无法连接（设置位置）到该驱动器。如果我在第一次打开 PoSH 时执行手动磁盘部分，我可以附加和分离我想要的所有内容，并且每次都能获得驱动器号。我需要做些什么来重置脚本中的 diskpart 吗？这是我正在使用的脚本片段。

function Mount-VHD {
         [CmdletBinding()]
         param (
                 [Parameter(Position=0,Mandatory=$true,ValueFromPipeline=$false)]
                         [string]$Path,
                 [Parameter(Position=1,Mandatory=$false,ValueFromPipeline=$false)]
                         [string]$DL,
                 [string]$DiskpartScript = "$env:SystemDrive\DiskpartScript.txt",
                 [switch]$Rescan
         )

         begin {
                 function InvokeDiskpart {
                         Diskpart.exe /s $DiskpartScript
                 }
                 ## Validate Operating System Version ##
                 if (Get-WmiObject win32_OperatingSystem -Filter "Version < '6.1'") {throw "The script operation requires at least Windows 7 or Windows Server 2008 R2."}
         }
         process{
                 ## Diskpart Script Content ## Here-String statement purposefully not indented ##
 @"
 $(if ($Rescan) {'Rescan'})
 Select VDisk File="$Path" `nAttach VDisk
 Exit
 "@ | Out-File -FilePath $DiskpartScript -Encoding ASCII -Force
                 InvokeDiskpart
 Start-Sleep -Seconds 3
 @"
 Select VDisk File="$Path"`nSelect partition 1 `nAssign Letter="$DL"
 Exit
 "@ | Out-File -FilePath $DiskpartScript -Encoding ASCII -Force
                 InvokeDiskpart
                         }
         end {
                 Remove-Item -Path $DiskpartScript -Force ; ""
                 Write-Host "The VHD ""$Path"" has been successfully mounted." ; ""
         }
 }
 function Dismount-VHD {
         [CmdletBinding()]
         param (
                 [Parameter(Position=0,Mandatory=$true,ValueFromPipeline=$false)]
                         [string]$Path,
                 [switch]$Remove,
                 [switch]$NoConfirm,
                 [string]$DiskpartScript = "$env:SystemDrive\DiskpartScript.txt",
                 [switch]$Rescan
         )

         begin {
                 function InvokeDiskpart {
                         Diskpart.exe /s $DiskpartScript
                 }

                 function RemoveVHD {
                         switch ($NoConfirm) {
                                 $false {
                                         ## Prompt for confirmation to delete the VHD file ##
                                         "" ; Write-Warning "Are you sure you want to delete the file ""$Path""?"
                                         $Prompt = Read-Host "Type ""YES"" to continue or anything else to break"
                                         if ($Prompt -ceq 'YES') {
                                                 Remove-Item -Path $Path -Force
                                                 "" ; Write-Host "VHD ""$Path"" deleted!" ; ""
                                         } else {
                                                 "" ; Write-Host "Script terminated without deleting the VHD file." ; ""
                                         }
                                 }
                                 $true {
                                         ## Confirmation prompt suppressed ##
                                         Remove-Item -Path $Path -Force
                                         "" ; Write-Host "VHD ""$Path"" deleted!" ; ""
                                 }
                         }
                 }
                 ## Validate Operating System Version ##
                 if (Get-WmiObject win32_OperatingSystem -Filter "Version < '6.1'") {throw "The script operation requires at least Windows 7 or Windows Server 2008 R2."}
         }
         process{
         ## DiskPart Script Content ## Here-String statement purposefully not indented ##
 @"
 $(if ($Rescan) {'Rescan'})
 Select VDisk File="$Path"`nDetach VDisk
 Exit
 "@ | Out-File -FilePath $DiskpartScript -Encoding ASCII -Force
                 InvokeDiskpart
                 Start-Sleep -Seconds 10
         }
         end {
                 if ($Remove) {RemoveVHD}
                 Remove-Item -Path $DiskpartScript -Force ; ""
         }
 }

Answer 1

我知道这不是直接的答案，但您是否尝试过不将其安装到驱动器号？请改用该assign mount=<PATH>选项，并让您的清理脚本在该子目录中工作。