WindowsVMDataDiskAutoDiskPart.ps1

# WinVMDataDiskAutoInitialize Powered by PowerShell
# Author: Archers Law <archerslaw@163.com>	
# Description: Auto diskpart tool for Windows OS	
# Github URL: https://github.com/archerslaw/diskpart-auto-tool

#Set Bypass ExecutionPolicy
Set-ExecutionPolicy -ExecutionPolicy Bypass -Force

$diskpartCmd = 'LIST DISK'
$disks = $diskpartCmd | diskpart.exe
Write-Host "Print the disk list info:"
$disks
foreach ($line in $disks)
{
    if ($line -match 'Disk\s+(?<DiskNumber>\d+) | 磁盘\s+(?<DiskNumber>\d+)')
    {
        $diskNumber = $Matches.DiskNumber
        if ([int]$diskNumber -ge 1)
        {
            $diskpartCmd = "@
                SELECT DISK $diskNumber
                ONLINE DISK
                SAN POLICY=OnlineAll
                EXIT
            @"
            Write-Host "Set ONLINE and clear READONLY with DataDisk:" $diskNumber
            $diskpartCmd | diskpart.exe | Out-Null
            Start-Sleep -Seconds 0.1
        }
        else
        {
            Write-Host "SystemDisk no need to set ONLINE and clear READONLY."
        }
    }
    else
    {
        Write-Host "This line has no any Disk info at all."
    }
}

$diskpartCmd = 'LIST DISK'
$disks = $diskpartCmd | diskpart.exe
$volumepartCmd = 'LIST VOLUME'
$volumes = $volumepartCmd | diskpart.exe
Write-Host "Print the updated disk list info:"
$disks
Write-Host "Print the updated volume list info:"
$volumes
foreach ($line in $disks)
{
    if ($line -match 'Disk\s+(?<DiskNumber>\d+)\s+(Online|Offline)\s+(?<Size>\d+)\s+GB\s+(?<Free>\d+)|磁盘\s+(?<DiskNumber>\d+)\s+(联机|脱机)\s+(?<Size>\d+)\s+GB\s+(?<Free>\d+)')
    {
        $diskNumber = $Matches.DiskNumber
        Write-Host "Print the initialize Disk info:" $diskNumber
        $FreeSize = $Matches.Free
        Write-Host "Print the Disk free size:" $FreeSize

        if ([int]$diskNumber -ge 1)
        {
            if ([int]$FreeSize -gt 0)
            {
                foreach ($raw in $volumes)
                {
                    if ($raw -match "Volume\s+(?<VolumeNumber>\d+) | 卷\s+(?<VolumeNumber>\d+)")
                    {
                        $volumeNumber = $Matches.VolumeNumber
                        Write-Host "Print the extend Volume list info:" $volumeNumber

                        if ([int]$volumeNumber -ge 2)
                        {
                            $volumepartCmd = "@
                            SELECT VOLUME $volumeNumber
                            EXTEND NOERR
                            EXIT
                            @"
                            Write-Host "Start to extend the DataDisk:" $volumeNumber
                            $volumepartCmd | diskpart.exe | Out-Null
            
                            Start-Sleep -Seconds 0.1
                            Write-Host "Complete to extend the DataDisk:" $volumeNumber
                        }
                        else
                        {
                        Write-Host "SystemDisk no need to extend at all."
                        }
                    }
                    else
                    {
                        Write-Host "This line has no any Volume info at all."
                    }
                }
                break
            }
            else
            {
                Write-Host "DataDisk" $diskNumber "no need to initialize at all."
            }
        }
        else
        {
            Write-Host "SystemDisk no need to initialize at all."
        }
    }
    else
    {
        Write-Host "This line has no any Disk info at all."
    }
}

$diskpartCmd = 'LIST DISK'
$disks = $diskpartCmd | diskpart.exe
$volumepartCmd = 'LIST VOLUME'
$volumes = $volumepartCmd | diskpart.exe
Write-Host "Print the updated disk list info:"
$disks
Write-Host "Print the updated volume list info:"
$volumes
foreach ($line in $disks)
{
    if ($line -match 'Disk\s+(?<DiskNumber>\d+)\s+(Online|Offline)\s+(?<Size>\d+)\s+GB\s+(?<Free>\d+)|磁盘\s+(?<DiskNumber>\d+)\s+(联机|脱机)\s+(?<Size>\d+)\s+GB\s+(?<Free>\d+)')
    {
        $nextDriveLetter = [char[]](67..90) | 
        Where-Object { (Get-WmiObject -Class Win32_LogicalDisk | 
        Select-Object -ExpandProperty DeviceID) -notcontains "$($_):" } | 
        Select-Object -First 1
        
        $diskNumber = $Matches.DiskNumber
        Write-Host "Print the initialize Disk info:" $diskNumber
        Write-Host "Print the NEXT Drive letter:" $nextDriveLetter
        $FreeSize = $Matches.Free
        Write-Host "Print the Disk free size:" $FreeSize
        
        if ([int]$diskNumber -ge 1)
        {
            if ([int]$FreeSize -gt 0)
            {
                $diskpartCmd = "@
                    SELECT DISK $diskNumber
                    CREATE PARTITION PRIMARY
                    FORMAT FS=NTFS LABEL='DataDisk$diskNumber' QUICK
                    ASSIGN LETTER=$nextDriveLetter
                    EXIT
                @"
                Write-Host "Start to initialize the DataDisk:" $diskNumber
                $diskpartCmd | diskpart.exe | Out-Null
            
                Start-Sleep -Seconds 0.1
                Write-Host "Complete to initialize the DataDisk:" $diskNumber
            }
            else
            {
                Write-Host "DataDisk" $diskNumber "no need to initialize at all."
            }
        }
        else
        {
            Write-Host "SystemDisk no need to initialize at all."
        }
    }
    else
    {
        Write-Host "This line has no any Disk info at all."
    }
}

$diskpartCmd = 'LIST DISK'
$disks = $diskpartCmd | diskpart.exe
$volumepartCmd = 'LIST VOLUME'
$volumes = $volumepartCmd | diskpart.exe
Write-Host "Print the last disk list info:"
$disks
Write-Host "Print the last volume list info:"
$volumes