BackupDirectory 登錄機碼設定不正確。在未提供完整路徑名稱的情況下，此機碼應指定儲存磁碟備份檔案的根路徑。此路徑亦可用來找出 RESTORE 的重新啟動檢查點檔案。

The BackupDirectory registry key is not configured correctly. This key should specify the root path where disk backup files are stored when full path names are not provided. This path is also used to locate restart checkpoint files for RESTORE.