[請教]請問磁碟工具中的這一行紅字是什麼意思呢？

如上圖所示

中間那一行紅字的意思是什麼呢？

我有去看了ｈｅｌｐ　結果　出現的是
If Disk Utility can't repair your disk or reports 「The underlying task reported failure,」 try to repair the disk or volume again. If that doesn't work, back up as much of your data as possible, reformat the hard disk, reinstall Mac OS X, and restore your backed up data. If you continue to have problems with your disk, it may be physically damaged and need to be replaced. See an authorized Apple dealer for more information.

令人有點擔心

請教各位大大　這問題　有解嗎？