WaykNow

2020.1.5

Private/BcdEdit.ps1


$safeboot_name = "Safe Mode with Wayk Now"
$safeboot_reg = "HKLM:SYSTEM\CurrentControlSet\Control\SafeBoot\Network"

function Get-BcdEntries
{
    param(
        [string] $bcdeditTempPath
    )

    $bcdedit_enum = $(Invoke-Process -FilePath $bcdeditTempPath -ArgumentList "/enum OSLOADER") | Out-String

    $entries = @()
    Foreach ($entry in $($bcdedit_enum -Split ".*`r`n-+`r`n")) {
        $entry = $entry.trim()
        if ($entry) {
            $entries += $entry
        }
    }

    return $entries
}

function Get-BcdIdByName
{
    param(
        [string] $name,
        [string[]] $entries
    )

    Foreach ($entry in $entries) {
        if ($entry -Match "\s.+${name}`r`n") {
            $identifier = $($entry | Select-String -AllMatches -Pattern '{.+}').Matches[0]
            return $identifier
        }
    }

    return $null
}

function Get-BcdNameById
{
    param(
        [string] $id,
        [string[]] $entries
    )

    Foreach ($entry in $entries) {
        if ($entry -Match "\s.+${id}`r`n") {
            $result = $entry | Select-String -AllMatches -Pattern "description+\s+(.+)`r`n"
            $name = $result.Matches.Groups[1]
            return $name
        }
    }

    return $null
}

function Get-BcdSafeBootByName
{
    param(
        [string] $name,
        [string[]] $entries
    )

    Foreach ($entry in $entries) {
        if ($entry -Match "\s.+${name}`r`n") {
            $result = $entry | Select-String -AllMatches -Pattern "safeboot+\s+(.+)`r`n"
            if($result){
                $name = $result.Matches.Groups[1]
                return $name
            }
        }
    }

    return $null
}

function Copy-BcdEditToTempDirectory
{
    param(
        [string] $tempDirectory
    )
    
    $system32Path = [System.Environment]::SystemDirectory
    $bcdEditLocation = "$system32Path/bcdedit.exe"
    Copy-Item "$bcdEditLocation" -Destination "$tempDirectory"

    return "$tempDirectory/bcdedit.exe"
}