Home > Questions

exFAT Formatted External USB Drive Not Mounting in Mavericks

I have an external USB drive (WD MyBook). It was formatted to the exFAT filesystem under OS 10.8. The drive is not readable on my Mac since I've upgraded to Mavericks. Disk Utility shows the volume, but cannot mount the exFAT partition. Disk Repair returns an error to indicate that the drive is faulty. I can still mount this drive on any machine that is not running Mavericks.

Best Answered by

iBoysoft author Connie Yang

Connie Yang

Answered on Monday, February 19, 2024

Since you say that your exFAT USB drive is readable on a Mac that is not running Mavericks and this issue appears after you've upgraded to Mavericks, I doubt that the exFAT formatted external drive not mounting problem is due to Mavericks bugs.

You can try updating your Mac if any minor updates are available. If it is not caused by the system errors, you have no choice but to reformat your drive. However, reformatting a drive will erase all data on it, you can use iBoysoft Data Recovery for Mac to get off files from your unreadable drive.

You need to contact [email protected] to get the version that supports OS X 10.9 Mavericks as the released official version supports macOS 14 - Mac OS X 10.11. 

People Also Ask

Read More Questions

Read More Advice From iBoysoft's Computer Experts

com.apple.diskmanagement.disenter error 53249

Drive Externo Não está Montando (Erro 53249), Razões e Soluções

Guia para corrigir o problema de não montagem do drive externo no Mac com a mensagem 'com.apple.diskmanagement.disenter erro 53249'.

Disque dur externe non monté sur Mac

Disque dur externe non monté sur macOS Sonoma/Ventura

8 solutions efficaces pour corriger le disque dur externe non monté sur macOS Sonoma/Ventura/Monterey/Big Sur et récupérer les données perdues du disque dur externe non monté sur Mac.

conseils de récupération de données mac

Fehler com apple DiskManagement disenter 49223 beheben

Beheben Sie den Fehler 49223 von com.apple.DiskManagement.disenter

Bekommen Sie die Fehlermeldung 'Konnte com.apple.DiskManagement.disenter Fehler 49223 auf Sonoma, Ventura, Monterey, Big Sur oder früheren macOS-Versionen nicht mounten? Beheben Sie es mit diesen 3 Lösungen.