Can't Access External Drive After Updating MacBook Pro to macOS Ventura

data recovery
1

After updating my MacBook Pro to macOS Ventura, I can no longer access my external hard drive. It doesn’t appear in Finder, and I can’t reformat it because it contains important files.

Disk Utility detects the drive but reports no issues. However, when I try to mount it, I get this error:

com.apple.DiskManagement.disenter error -119930868

Is there a way to fix this without losing my data?

2

The error usually means macOS can see the drive but cannot mount the file system properly. Since you have important files on it, do not reformat the drive yet.

Try these steps:

  1. Open Disk Utility → View → Show All Devices and run First Aid on both the volume and the physical drive.
  2. Restart your Mac and reconnect the drive directly (avoid hubs/adapters).
  3. Check the drive format. If it is NTFS, Ventura may detect it but won’t mount it without NTFS software. You can use iBoysoft NTFS for Mac to mount it in full read-write access.
  4. Try mounting it manually in Terminal:
diskutil list
diskutil mountDisk /dev/diskX

(replace diskX with your drive identifier)

If it still won’t mount, the file system may be damaged. At that point, focus on recovering the data first rather than repairing or formatting the drive.

I’ve used iBoysoft Data Recovery for Mac. This tool helps me recover files from my inaccessible USB drive.

It can scan your unmountable external drive and list the scanned files by type. Then, you can select what you want and simply click Recover to get them back.