prepare_vm_disks.ps1

#!/bin/bash

# The MIT License (MIT)
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# Copyright (c) 2015 Microsoft Azure
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$disks = Get-Disk | Sort Number
# 77 = M
$letters = @(77) | ForEach-Object { [char]$_ }
$count = 0
$label = "MTHS"

if(Get-Volume | Where-Object { $_.FriendlyName -eq $label}) {
    Write-Output "Disk already prepared"
}
else
{
    for($index = 2; $index -lt $disks.Count; $index++) {
        $driveLetter = $letters[$count].ToString()
        if ($disks[$index].partitionstyle -eq 'raw') {
            $disks[$index] | Initialize-Disk -PartitionStyle MBR -PassThru |
                New-Partition -UseMaximumSize -DriveLetter $driveLetter |
                Format-Volume -FileSystem NTFS -NewFileSystemLabel "$label.$count" -Confirm:$false -Force
                break
        } else {
            $disks[$index] | Get-Partition | Set-Partition -NewDriveLetter $driveLetter
        }
        $count++
    }
}
# This file is downlowded from https://raw.githubusercontent.com/Azure-Samples/compute-automation-configurations/master/prepare_vm_disks.ps1