BootManagerCleanup.ps1

# --------------------------------------------------------------------------- 
# Get-RunEnvironment:  Returns whether running in WinPE 
# --------------------------------------------------------------------------- 
function Get-RunEnvironment { 
    try { 
        $TSEnv = New-Object -ComObject Microsoft.SMS.TSEnvironment -ErrorAction Stop 
        if ($TSEnv.Value("_SMSTSInWinPE") -eq "true") { 
            Write-Information "Environment found: WinPE" 
            Write-Information '' 
            $script:InWinPE = $true } 
        else { 
            Write-Information "Environment found: Full OS" 
            Write-Information '' 
            $script:InWinPE = $false } 
    } 
    catch { 
        if (Test-Path -Path "HKLM:\SYSTEM\ControlSet001\Control\MiniNT" -PathType Container) { 
            Write-Information "Environment found: WinPE" 
            Write-Information '' 
            $script:InWinPE = $true 
        } 
        else 
        { 
            Write-Information "Environment found: Full OS" 
            Write-Information '' 
            $script:InWinPE = $false 
        } 
 
    } 
} 
 
# --------------------------------------------------------------------------- 
# Get-LogDir:  Return the location for logs and output files 
# --------------------------------------------------------------------------- 
function Get-LogDir 
{ 
    try 
    { 
        $TSEnv = New-Object -ComObject Microsoft.SMS.TSEnvironment -ErrorAction Stop 
        if ($TSEnv.Value("LogPath") -ne "") 
        { 
            $logDir = $TSEnv.Value("LogPath") 
        } 
        else 
        { 
            $logDir = $TSEnv.Value("_SMSTSLogPath") 
        } 
    } 
    catch 
    { 
        $logDir = $env:TEMP 
    } 
    return $logDir 
} 
 
# --------------------------------------------------------------------------- 
# Get-BCDObject:  Returns BCD Objects 
# --------------------------------------------------------------------------- 
function Get-BCDObject () 
{ 
    $bcdEntries = bcdedit /enum firmware | Where-Object { $_ -ne "" } 
    $bcdObject = @() 
 
    $UEFI = $False 
 
    foreach ($bcdEntry in $bcdEntries) 
    { 
        if ($bcdEntry -eq "Firmware Boot Manager") 
        { 
            $UEFI = $true 
        } 
        elseif ($bcdEntry -eq "Windows Boot Loader" -or $bcdEntry -eq "Windows Boot Manager" -or ($bcdEntry -eq "") -or $bcdEntry.Contains("-----")) 
        { 
            if (!($bcdEntry.Contains("-----"))) 
            { 
                $UEFI = $false 
            } 
            else 
            { 
                if ($UEFI -eq $true) 
                { 
                    Write-Information '' 
                    Write-Information "Skipping PSobject creation because '$bcdEntry' is part of 'Firmware Boot Manager'" 
                } 
                else 
                { 
                    Write-Information '' 
                    Write-Information "'$bcdEntry' encountered, creating PSobject" 
                    $object1 = New-Object PSObject 
                    $bcdObject += $object1 
                } 
            } 
        } 
        else 
        { 
            if ($UEFI -eq $false) 
            { 
                $bcdsplit = $bcdEntry.Split(" ") 
                $property = $bcdsplit[0] 
                $value = ($bcdEntry.Substring($bcdsplit[0].length)).trim() 
                if ($property -ne '') 
                { 
                    if (!($object1)) 
                    { 
                        Write-Information "PSObject does not exist, skipping '$property'." 
                    } 
                    else 
                    { 
                        Write-Information "Adding '$property' to list" 
                        $object1 | Add-Member -MemberType NoteProperty -Name $($property) -Value $value 
                    } 
                } 
            } 
        } 
    } 
    return $bcdObject 
} 
 
$logDir = Get-LogDir 
Start-Transcript "$logDir\Remove-OldBCDEntries.log" 
 
$bcdEntriesBefore = bcdedit /enum firmware 
Write-Information '=========================BCDEdit Before=========================' 
foreach ($bcdEntryBefore in $bcdEntriesBefore) 
{ 
    Write-Information "$($bcdEntryBefore)" 
} 
Write-Information '=======================End BCDEdit Before=======================' 
Write-Information '' 
 
Get-RunEnvironment 
 
 
$bcdObjs = Get-BCDObject # Store bcdedit output in a Powershell object 
 
foreach ($bcdObj in $bcdObjs) 
{ 
    if ((Get-Culture).Name -eq 'fr-FR') # Not using an English version of Windows? Find your culture code here: https://technet.microsoft.com/en-us/library/cc722435(v=ws.10).aspx 
    { 
        $BootIdentifier = $bcdObj.identificateur # Change this to how "identifier" is said in your culture. 
    } 
    else 
    { 
        $BootIdentifier = $bcdObj.identifier # English default. 
    } 
    $BootDescription = $bcdObj.description 
    if ($script:InWinPE) 
    { 
        if ($BootDescription -eq "Windows Boot Loader" -or $BootDescription -eq "Windows Boot Manager") 
        { 
            Write-Information "Deleting '$BootIdentifier'" 
            bcdedit /delete "$BootIdentifier" /cleanup /f 
        } 
        else 
        { 
            Write-Information "Skipping '$BootIdentifier'" 
        } 
    } 
    else 
    { 
        if ($BootDescription -eq "Windows Boot Loader" -or $BootDescription -eq "Windows Boot Manager" -and $BootIdentifier -ne "{bootmgr}") 
        { 
            Write-Information "Deleting '$BootIdentifier'" 
            bcdedit /delete "$BootIdentifier" /cleanup /f 
        } 
        else 
        { 
            Write-Information "Skipping '$BootIdentifier'" 
        } 
    } 
} 
$bcdEntriesAfter = bcdedit /enum firmware 
Write-Information '=========================BCDEdit After=========================' 
foreach ($bcdEntryAfter in $bcdEntriesAfter) 
{ 
    Write-Information "$($bcdEntryAfter)" 
} 
Write-Information '=======================End BCDEdit After=======================' 
Write-Information '' 
Stop-Transcript