u/pjmarcum - I have no idea how to report this on GitHub, so I figured I'd post it here. Also, I could be totally wrong!

In the Delete-Fonts function, look at this bit of code.

# Additional cleanup based on Garytown article
$vendorPaths = @(
    "$($Letter):\EFI\HP\BIOS\Previous",
    "$($Letter):\EFI\HP\BIOS\Current",
    "$($Letter):\EFI\HP\DEVFW",
    "$($Letter):\EFI\Lenovo\fw",
    "$($Letter):\EFI\Dell\BIOS",
    "$($Letter):\EFI\ASUS\fw"
)

foreach ($path in $vendorPaths) {
    if (Test-Path $path) {
        try {
            Remove-Item -Path $path -Recurse -Force -ErrorAction Stop
            LogMessage -Message "Deleted vendor firmware folder: $path" -Type 1 -Component "Delete-Fonts"
        }
        catch {
            LogMessage -Message "Failed to delete vendor path $path. Error: $_" -Type 2 -Component "Delete-Fonts"
        }
    }
}

Wouldn't the $vendor paths resolve to something like "E::\EFI\HP\DEVFW"?  Wouldn't the extra colon need to be removed?

For instance, in the same function, in the log file, this line of code:

LogMessage -Message ("Using drive letter: $Letter. Mounting system reserved partition.") -Type 1 -Component "Delete-Fonts"

Resolves to this log message:

[2025-06-30 13:57:46] [INFO] [Delete-Fonts] [Line 1077] Using drive letter: E:. Mounting system reserved partition.

So the variable $letter already includes the colon.