Mac os file system check

File system check exit code is 8. File system or repair failed. Operation failed. What do I need to do here to get my computer running again. I have transferred all files I need onto another computer. So it sounds like you have a disk error of some sort that Disk utility can't fix. This does happen from time to time and is the reason things like Diskwarrior exist. Assuming you don't have access to a third-party disk repair tool Diskwarrior, etc. If at all possible it could be a bit faster to create a macOS install thumb drive so you don't have to wait on Recovery Mode to download the OS as it installs.

If you do it that way, boot from the thumb drive and once you get to the install screen you should have a menu option to launch Disk Utility. Do so, select the MacHD volume or whatever it is called and format it. Once that is done you can proceed with installing macOS and restoring your files and Apps. If you are doing it from recovery Mode. If it turns out it is a physical error of some sort then after formatting the volume you will either get an error that it could not be formatted or running disk repair on it will still return errors.

Running fsck from Single User Mode

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  • Before We Begin.
  • Tutorial to Repair Disk and File System Problems on Your Mac.
  • Finding the Right Disk.
  • 1. Try Safe Mode.
  • 1. Disk Utility.
  • Your Answer?

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How to Repair a Mac Disk with fsck from Single User Mode

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How to Repair Hard Disks with fsck on macOS

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How to run OSX File System Check in OSX

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Use “First Aid” in the Disk Utility

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Tutorial to Repair Disk and File System Problems on Your Mac

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