#This do loop will first run the format script
#Then once it is done it will ask the user if they wish to format another drive
#If the user clicks on "Yes" the process will begin again
#If the user clicks on "No" the loop will end.  Nothing popups on the screen
cls
do {
    $ISOPathforDeploy = "\\share\OS.iso"
    $PartitionType = "FAT32"
    ####################################
    #Please only change variables above.
    #Do not edit code below this line.
    ####################################
    $wshell = New-Object -ComObject Wscript.Shell
    if (-not (Test-Path $ISOPathforDeploy)) { $pathError = $wshell.Popup("ISO path is invalid. Please edit ISOPathforDeploy variable. Ending format.", 0, "Boot Media, 48) }
    else {
        $checkForUSBs = Get-Disk | Where-Object BusType -eq USB
        if (-not $checkForUSBs) { $usbError = $wshell.Popup("No USB detected. Ending format.", 0, "Boot Media", 48) }
        else {
            do {
                $Results = Get-Disk |
                    Where-Object BusType -eq USB |
                    Out-GridView -Title 'Select USB Drive to Format' -OutputMode Single |
                    Clear-Disk -RemoveData -RemoveOEM -Confirm:$false -PassThru |
                    New-Partition -UseMaximumSize -IsActive -AssignDriveLetter |
                    Format-Volume -FileSystem $PartitionType
                $Volumes = (Get-Volume).Where( {$_.DriveLetter}).DriveLetter
                Dismount-DiskImage -ImagePath $ISOPathforDeploy
                Mount-DiskImage -ImagePath $ISOPathforDeploy
                $ISO = (Get-Volume | where {$_.FileSystemLabel -match "Configuration Manager"} | where {$_.SizeRemaining -eq "0"}).DriveLetter
                Set-Location -Path "$($ISO):\boot"
                bootsect.exe /nt60 "$($Results.DriveLetter):"
            }
            until ($results.driveletter -ne $null)
            Copy-Item -Path "$($ISO):\*" -Destination "$($Results.DriveLetter):" -Recurse -Verbose
            Dismount-DiskImage -ImagePath $ISOPathforDeploy
            #End of formatting, asking to re-run script
        }
    }
    $retry = $wshell.Popup("Do you want to format another drive?", 0, "Boot Media", 36)
    if ($retry -eq "6") { $insert = $wshell.Popup("Please insert another flash drive. Press OK when ready to format.", 0, "Boot Media", 64) }
    if ($retry -eq "7") {
        $allDone = $wshell.Popup("Please remove your flash drive.", 0, "Boot Media", 64)
        #exit
    }
}
until ($retry -eq "7")