File System Check Exit Code Is 8

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by Bryan, updated on 2020-06-01 to Mac Data Recovery

With the software, you can easily recover the data from the disk with ‘File system check exit code is 8’ problem. Just a few clicks needed, you are able to get back the data easily. Many issues on Mac can be solved by a simple reboot. So, when you get 'File system verify or repair failed' and 'File system check exit code is 8' error, don't hesitate to reboot your Mac. Press and hold down the Power button until the Mac turns off. Wait a moment and then turn it on. If this doesn't help, try the second one.

Hard Drive Issue - File system check exit code is 8

“Hi, I have a 1TB WD external hard drive. But, it won’t mount on my Mac. I restart my Mac, then use Disk Utility > First Aid to repair it. It gives this messages ‘File system check exit code is 8’ when running First Aid. Basically wondering what my options are, wondering what I am to do. If there is a way to recover the data from it and/or fix the drive.” - Darren

Some causes result in ‘File system check exit code is 8’ error

  • Corrupt or incompatible file system, system directory on the drive.
  • Incorrectly configured system settings.
  • Virus attack, malware or spyware infection.
  • Outdated drivers/softwareMac startup drive or directory is loaded with Junk file/programs.

macOS contains a variety of tools for repairing disk, partition, and file system errors. Disk Utility's First Aid is the most frequently used one. But First Aid can only fix minor errors on disks, if the problem is beyond its reach, some error messages will be reported, such as 'File system check exit code is 8'. Normally, the exit code 0 is a good thing, which means no error is found. While the 'File system check exit code is 8' indicates a corrupted file system is found during a check. Here, we will show you some easy methods to fix ‘File system check exit code is 8’, and find a data recovery software to help you recover data from your hard drive (local hard drive or external hard drive).

First of all, rescue your data

When ‘File system check exit code is 8’ occurs, you can’t access to your data in the hard drive. The data is lost? Don’t worry, you can get lost data back. Here are some methods.

1. Check your previous backups. If you have backup your hard drive which has ‘File system check exit code is 8’ error, you can restore your data via backups.

2. Clone or move your data to another hard drive. Some disk cloning software is able to help you clone the hard drive data to another good hard drive.

3. Find a Windows PC, then connect the hard drive to the Windows PC to check if it can be recognized by the Windows PC. If yes, just copy the hard drive to your Windows PC.

File System Check Exit Code Is 8

4. Find a data recovery software to recover lost data.

Do Your Data Recovery is a powerful data recovery software, it can help you recover lost data from the hard drive which has ‘File system check exit code is 8’ error. Follow the steps below.

Step 1: Download Do Your Data Recovery on your Mac computer, then run it on your Mac. It will show all hard drives and external devices on your Mac computer.

Step 2: Select the hard drive which has ‘File system check exit code is 8’ error, then click on Scan button to scan the hard drive. It is recommended to enable Advanced Recovery to scan the hard drive.


File System Check Exit Code Is 8 External Hard Drive

Step 3: Preview and recover lost files after scan. If you can’t find all lost files after quick scan, then try advanced recovery mode to scan the hard drive again.

Some useful tips for fixing ‘File system check exit code is 8’ error on macOS

1- Check your macOS, and upgrade it to the latest version. Then restart your Mac to check if the ‘File system check exit code is 8’ is fixed.

2- Boot your Mac into Safe Mode: Restart your Mac computer and hold the button of the 'Shift' while it's booting. Input your secret word and your Macintosh will then check your disks. This will cost much time, please be patient. When it's finished signing in and you see a work area, the disk check is finished. You can reboot your Macintosh now.

3- Run First Aid in macOS Recovery mode: Boot your Mac into macOS Recovery mode > From the macOS Utilities menu, select Disk Utility > Select the disk that has 'File system check exit code is 8' error > Click First Aid on the top menu bar > Click Done and restart your Mac.

4- Use fsck in Single-User Mode.

To do this, start your Mac in single-user mode. Restart it, and then press and hold the Command+S keys while it boots. Type /sbin/fsck -fy into the terminal and press Enter to start a file system check:

If a message generated is 'File system was modified', then again run fsck –fy. If it will generate a message 'The volume (name) appears to be OK', type reboot and leave Single User Mode.

5- You also can format the hard drive to fix the ‘File system check exit code is 8’ error. DoYourData Super Eraser can help you easily format the hard drive or corrupted hard drive.

If all solutions above can’t help you solve the ‘File system check exit code is 8’ problem, you also can check this guide: How to Repair Disk and File System Problems on Your Mac?

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Posted by Juno to Mac Data Recovery Tips on February 12th, 2018

Summary: 'File system verify or repair failed' in Disk Utility, along with 'File system check exit code is 8', usually occurs to external hard drives, USB flash drives, SD cards, SSD, as well as Mac internal hard drives. This article will show you 6 best solutions to this error without losing data.

When trying to install an update of macOS or verify and repair disk errors in Disk Utility, you may encounter the error messages like 'File system check exit code is 8' and 'File system verify or repair failed', which indicate that the file system of the drive or volume is corrupted, or about to fail. The annoying part of this situation is, you cannot access the data stored on the drive any more.

There's no need to panic. Let's go through the 6 useful solutions to this error right now.

Table of contents
1. Overview of 'File system verify or repair failed' error
2. Recover lost data from corrupted drives
3. Fix 'File system verify or repair failed' error
4. What is file system?

Part I: Reasons of 'File system verify or repair failed' error

My WD My Passport couldn't be mounted or repaired in Disk Utility. When I ran First Aid, I got error message: 'File system verify or repair failed'. The external hard drive is full of important backup files. Anyone can tell me how to fix this error?

When performing file system verification in Disk Utility, you may see messages like 'Storage system check exit code is 0' and 'File system check exit code is 0', where the code '0' means no errors were found, everything is OK.

However, if you get 'File system check exit code is 8' and 'File system verify and repair failed', there's something bad with the drive. As mentioned above, it is a report of file system corruption. This error could be caused by sudden power failure, catalog file corruption, invalid volume header, or virus attacks, etc.

In addition, this error could happen on any Mac operating system including macOS Mojave, High Sierra, and also to any external hard drive, USB flash drive, SD card, SSD and Mac internal hard drive as well.

Part II: How to recover lost data from the corrupted drive?

Note: It's not very difficult to fix the error 'File system verify or repair failed' as macOS is now built with a handful of tools and functionalities to help. However, chances are that the original data may be overwritten during the troubleshooting process. Once that happens, you will lose data even though you can have the drive work again successfully.

Thus, before moving ahead to the solutions, we have two suggestions:

No.1: If you have a full backup of your data, jump to Part III directly.

File system check exit code is 8 macbook pro

No.2: If you have no backups, follow the steps here to recover lost data from the corrupted drive with iBoysoft Data Recovery for Mac.

iBoysoft Data Recovery for Mac can recover lost data from corrupted external hard drives and Mac internal hard drives. And also, it can recover deleted photos, videos, documents, emails, music files even emptied from Mac Trash. It's fully compatible with macOS Big Sur 11/10.15/10.14/10.13/10.12/10.11/10.10/10.9/10.8/10.7.

Step 1: Download iBoysoft Data Recovery for Mac. You needn't install the software but just drag the package to Applications folder, and then double click to launch it.

Step 2: Select the drive which file system verification failed in Disk Utility.

Step 3: Your freedom vpn client apk. Click 'Next' button. The program will start scanning the drive for lost files.

Step 4: Preview the scanning results and choose files you want to recover.

Step 5: Click 'Recover' button to get those files back.

Important: Please save the recovered files to a different location to avoid data overwriting.

Step 6: Have a check to ensure you have got all of the lost files back.

Aside from above, iBoysoft Data Recovery for Mac can also recover lost data from formatted, unmountable, unreadable hard drives, USB flash drives, SD cards, etc.

Part III: 6 solutions to 'File system verify or repair failed' error

Now you can try out the 6 solutions to fix the corrupted external hard drive as well as Mac internal hard drive without losing data.

Note: As this error could happen to both internal and external drives on Mac. Please do the solutions carefully according to your specific situation.

Solution 1: Reboot your Mac

Many issues on Mac can be solved by a simple reboot. So, when you get 'File system verify or repair failed' and 'File system check exit code is 8' error, don't hesitate to reboot your Mac.

Press and hold down the Power button until the Mac turns off. Wait a moment and then turn it on. If this doesn't help, try the second one.

Solution 2: Boot your Mac into Safe Mode

Safe Mode has an automatic startup check and repair that is helpful if the 'File system verify or repair failed' error occurs to the Mac internal hard drive.

Restart your Mac and hold 'Shift' key while it's booting, then log in with your password. It may take longer than normal boot, so please be patient. When it's done, reboot your Mac normally.

Learn what you can do when Mac won't let you log in

Solution 3: Utilize Disk Utility in macOS Recovery mode

If you're lucky enough, your troubleshooting effort could stop above. However, if the file system of the drive, especially the internal hard drive, is severely corrupted, you may need to run First Aid in macOS Recovery mode, which idles the problematic drive and makes changes to it.

Step 1: Restart your Mac and press and hold Command + R keys immediately. Release the keys until you see the Apple logo.

File system check exit code is 8. external drive

Macos Error 69845

Step 2: Click Disk Utility from the macOS Utilities menu.

Step 3: Select the corrupted drive from the left sidebar.

Step 4: Click First Aid on the top of the window. Wait while it verifying and repairing the drive.

Step 5: Click Done to quit First Aid.

Solution 4: Run fsck in Single-user Mode

File system consistency check (fsck for short) is a useful tool for checking and fixing drive problems. To run fsck, you need to boot into Single-user Mode.

Step 1: Restart your Mac, then immediately press and hold Command + S keys. Release the keys until the Apple logo appears. When it boots up, you'll see a command line prompt.

Step 2: Type /sbin/fsck -fy into the terminal and hit Enter to start a file system check.

If you see ** The volume [name] appears to be OK then everything is fine. If you see ***** FILE SYSTEM WAS MODIFIED *****, it indicates that there were problems found and fixed. Repeat the /sbin/fsck -fy command till you see ** The volume [name] appears to be OK.

Step 3: Type reboot and hit Enter. Your Mac will reboot as normal.

Solution 5: Reformat the drive in Disk Utility

Reformatting is a feasible method to fix corrupted external hard drives on Mac, so you can reformat the hard drives on Mac to make it workable again.

Note: Reformatting a drive essentially means creating a new, blank indexing scheme, which will wipe all data on it. So once again, please make sure you have a backup copy or have recovered data from the corrupted external hard drive with iBoysoft Data Recovery for Mac.

Step 1: Go to Disk Utility.

Note: If you're fixing the corrupted Mac internal hard drive, you need to restart your Mac in macOS Recovery mode and click Disk Utility from the macOS Utilities menu.

Step 2: Click the corrupted drive from the left sidebar.

Step 3: Click Erase on the top of the window.

Step 4: Provide a Name and Format, then click Erase. It will take a while to finish the erasure process.

Step 5: Click Done when it ends

Important: If it is an external hard drive, you can now copy and paste the backed up or recovered data to the drive. But if it's a Mac internal hard drive, please go on with the following steps to reinstall macOS.

Step 6: Go back to macOS Utilities and select Reinstall macOS.

Step 7: Follow the onscreen wizard to reinstall an operating system, such as macOS Mojave.

Step 8: Copy and paste back data.

Solution 6: Replace it or send to repair

If unfortunately, none of the solutions above helps, it's very probably the drive is damaged physically. You have to replace it with a new one, or send it to a local hard drive reparation center.

Part IV: What is a file system?

A file system in computing controls how files are organized and retrieved on storage devices, such as external hard drives, USB flash drives, SD cards, DVDs, BDs, and so on. It is like an index or database containing the physical location of every piece of data on storage devices.

In our daily lives, most of the disk errors are related to file systems, especially when First Aid found corruption that needs to be repaired. Usually, the file system error can be fixed by reformatting. However, before performing disk reformatting, making a backup or recovering data from the drive is of great importance.

Conclusion:

It's terrible to encounter error messages like 'File system verify or repair failed' or 'File system check exit code is 8'. In this article you can find 6 useful solutions to fix the corrupted external hard drive or internal hard drive on Mac. However, to guarantee your data security, please recover lost data from corrupted drives with iBoysoft Data Recovery for Mac first.

Bonus tip: Backup your data regularly. This is the best and risk-free method to keep your data safe.

Still have questions?