Home > Questions

Mac shuts off frequently file system check exit code is 8

Now and then, my computer randomly shuts off. After the progress bar is fully loaded, my computer shuts down. Entering Single User Mode and inputting the following command—/sbin/mount -uw / exit—let me get back into my machine. When I used the disk utility to run First Aid, I got the error message "Invalid node structure. Catalog file entry not found for extent. The volume could not be verified completely. The file system check exit code is 8. Operation successful." What tips do you have for fixing my computer? I'm not sure if the hard disk, OS X, or battery are to blame for this. Fortunately, I was able to access my computer again and save everything, but I'm not sure what the main problems are.

Best Answered by

iBoysoft author Amanda Wong

Amanda Wong

Answered on Tuesday, August 27, 2024

According to the messages returned by First Aid, it seems that the file system is corrupted, and First Aid failed to repair the disk error. Such a hard drive failure could lead to Mac keeps shutting down.

Therefore, if you fix the drive issue file system check exit code is 8, it may solve the problem Mac keeps shutting down, you can run First Aid multiple times in macOS Recovery mode and use the FSCK command in Single User Mode.

Perhaps, the Mac still shuts down randomly, then, you can try the following solutions:

  • Make sure your Mac is powered up properly to work correctly
  • perform a complete shutdown
  • Restart Mac in Safe Mode
  • Reset SMC and NVRAM
  • Reinstall macOS
  • Uninstall the recently installed app

People Also Ask

Can't mount APFS Seagate external drive on Mac

Read this thread to learn proven methods for external hard drive not mounting on Mac.

iBoysoft author Amanda WongAmanda Wong

NTFS drive works on my MacBook Pro but not on my MacBook

Read this thread to fix the NTFS drive works on your MacBook Pro but not on your MacBook.

iBoysoft author Amanda WongAmanda Wong

How to Fix Time Machine File system verify or repair failed.:(-69845)?

It shows how to fix File system verify or repair failed.: (-69845), including File system check exit code is 8.

iBoysoft author Eudora LiuEudora Liu

Have no full access to NTFS drives on Mac, What to do?

Having no write access to NTFS drives on Mac? This thread discusses how you can get full access to NTFS-formatted drives on Mac without losing data or reformatting.

iBoysoft author Jenny ZengJenny Zeng

600GB Files on external drive showing 0 byte on new Mac

Here are the solutions to try if you can view files on an external hard drive from an old Mac but not a new one.

iBoysoft author Jenny ZengJenny Zeng

Why my SD card not showing up in Disk Utility on Mac?

This answer helps you fix the SD card not showing up in Mac Disk Utility issue. It can be caused by a loose connection, a damaged device, or a wrong Disk Utility setting.

iBoysoft author Jessica SheeJessica Shee

Read More Questions

Read More Advice From iBoysoft's Computer Experts

How to use an external hard drive on Mac

Get to Know How to Use an External Hard Drive on Mac

Read to know how to use an external hard drive on Mac, how to connect external hard drive to Mac computer, how to format external hard drive, and how to transfer files from Mac to external hard drive.

How to Tips

Erreur de fichier introuvable Mac Ventura

Corriger 'Le fichier ne peut pas être trouvé' sur Mac Ventura/Monterey

Corriger l'erreur 'Le fichier ne peut pas être trouvé' sur Mac exécutant macOS Ventura, Monterey et Big Sur. Explique pourquoi l'erreur 'Le fichier ne peut pas être trouvé' se produit.

Mac Documents folder

Mac Documents Folder: Where It Is & What It Is Used for

This post introduces the Mac Documents folder, including where it is on a Mac, what it is for, what to do if it is missing.

Wiki Tips