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[EX/QFX] Unable to mount USB drive on EX switches

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Article ID: KB30988 KB Last Updated: 04 Mar 2017Version: 2.0
Summary:

This article describes an error message generated while attempting to mount a USB device on EX switches. Two workarounds are suggested.

Symptoms:

While mounting a USB drive on an EX switch device, the following error message may be observed:

root@% mount_msdosfs /dev/da0s1 /mnt 

mount_msdosfs: /dev/da0: Invalid argument

Cause:

 This error might be caused by problems with the USB drive such as an unsupported format (exFAT).

Solution:

Suggested workarounds:

  • Use another USB drive with FAT16 or FAT32 format. 
  • Newer USB 3.0 drives with large capacity use the exFAT format, and might not support the FAT32 format. Try using USB 2.0 drives with smaller capacity. 

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