Control: tags -1 + moreinfoPlease provide more information how exactly the external drive is mounted (e.g. if you mount it via a script, attach the script. If you mount it manually, provide the complete command line)
Also include the output of blkid /dev/<DEVICE> <DEVICE> is what you use in your mount command Also the complete /etc/fstab.Also, please attach the journal from when you attach the external drive to the moment it is unmounted.
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