VOID ScanVolumes(VOID);
BOOLEAN FileExists(IN EFI_FILE *BaseDir, IN CHAR16 *RelativePath);
+BOOLEAN DirectoryExists(IN EFI_FILE *BaseDir, IN CHAR16 *RelativePath);
EFI_STATUS DirNextEntry(IN EFI_FILE *Directory, IN OUT EFI_FILE_INFO **DirEntry, IN UINTN FilterMode);