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Storage system check exit code is 8 when partitioning disk

I want to install Windows on my 2018 MacBook Pro but Boot Camp doesn't allow me to partition it. It says an error has occurred. I then ran Disk Utility First Aid to verify my internal hard drive, and it didn't detect any issues. I retried several times with Boot Camp Assistant, but it still won't partition the drive. So I decided to manually partition it in Disk Utility. However, it fails with the message "Storage system check exit code is 8." Any suggestion?

Best Answered by

iBoysoft author Jenny Zeng

Jenny Zeng

Answered on Friday, June 14, 2024

The message "Storage system check exit code is 8" suggests corrupted files on your internal hard drive. To pinpoint the cause, you can run First Aid in Recovery Mode.

It can check disk errors on your Mac and automatically repair them, if within its ability. If it fails to repair your drive, it may give a hint about the root cause.

Simply boot into macOS Recovery, click View > Show All Devices, then select the last volume on the disk and click First Aid. After this volume is repaired, continue with the next volume in order until the container and physical disk are checked.

If First Aid fails, look carefully at the log entry it provides to find the possible reasons. For instance, it may state that certain snapshots are causing trouble. In this case, you can delete the snapshots to resolve the issue.

How to Delete Old Time Machine Backups & Snapshots

Once the problem is fixed, retry installing Windows on your Mac.


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