Home > Questions

What to do when facing file system verify or repair failed 69845 error?

When trying to check my external disk I receive this message on Onyx... what or how can I solve the issue? Message: Error: -69845: File system verify or repair failed Underlying error: 8: POSIX reports: Exec format error

Best Answered by

iBoysoft author Anna Yuan

Anna Yuan

Answered on Tuesday, December 3, 2024

The File system verify or repair failed. : (-69845) is a common error when you check your external drive on Mac. When this error occurs, it usually means the drive has file system corruption, which can be caused by sudden power failure, catalog file corruption, invalid volume header, virus attacks, etc.

To fix the external drive File system verify or repair failed. : (-69845), you can reformat the drive and sign a new partition map and file system to it. However, reformatting could erase all data on your external disk, you need to recover data from it first to avoid data loss before reformatting.

To recover data from an external drive with a file system error on Mac, you can use iBoysoft Data Recovery software to help you. This powerful app is capable of finding and recovering data from unmountable external drives, flash drives, memory cards, SD cards, etc. It's compatible with macOS 13/12/11/10.15/10.14/10.13/10.12 and OS X 10.11. To recover your important data on your external disk, do the following:

  1. Free download, install and launch iBoysoft Data Recovery for Mac on your MacBook.
  2. Select the corrupted/damaged external drive and click the Search for Lost Data button to scan for all data. 
  3. Preview the search results once the scanning process is completed, choose the files you need, and click Recover to get them back. DO NOT save the recovered files to the damaged drive, save them to another place instead to avoid data loss.

Now if you've confirmed that all the files you need on this external drive have been recovered, you can format the external hard drive in Mac Disk Utility. When finishing reformatting, connect the drive again to your MacBook. The macOS should read it normally.

If you don't want to reformat your external drive, maybe you can try fsck in Mac Single User Mode to see what happens. If you're lucky, maybe the fsck command can repair your disk.

People Also Ask

Read More Questions

Read More Advice From iBoysoft's Computer Experts

Cartão SD não reconhecido pelo Mac

Correção: Cartão SD não aparece, lê, reconhece no Mac

Guia passo a passo de solução de problemas e reparo para Mac não ler cartão SD, Mac não reconhecer cartão SD, cartão SD não aparece no Mac ou Utilitário de Disco.

recuperacion de datos mac

Proceso UARPUpdaterServiceUSBPD en Mac

Proceso UARPUpdaterServiceUSBPD: Definiciones y Soluciones

Si te encuentras con el problema de que el proceso UARPUpdaterServiceUSBPD consume grandes cantidades de memoria, has llegado al lugar correcto. Esta publicación te guía a través de su definición y solución.

起動セキュリティユーティリティ

起動セキュリティユーティリティ(M1 Macを含む)のアクセスと設定の変更

AppleはMacを保護するための複数の方法を提供しており、起動セキュリティユーティリティはその1つです。この投稿は、起動セキュリティユーティリティとは何か、Macでアクセスする方法を理解するのに役立ちます。