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So I am using Ubuntu Xenial on my Acer Chromebook, anyways, it seems I can't use my external USB drive as it states "unable to mount 31GB volume" "not authorized to preform action" I have no idea why this is happening, also I'm very very green in this area.

SurvivalMachine
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Aidan
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    Did you use that flash drive as installer? Most installers use dd to create a hybrid DVD flash drive configuration that is not a standard partitioned drive. Reset USB flash that was dd'd to make it usable again https://askubuntu.com/questions/939230/formatting-a-usb-stick-unable-to-operate-usb/939266#939266 & https://help.ubuntu.com/community/mkusb#Re-use_the_pendrive – oldfred Jan 26 '19 at 17:43

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I had found a solution which is not the exact answer but an way around this problem. Actually in ubuntu 18.04 plug and play feature is (I guess) disabled; so the usb will show up in the ls command i.e.

ls /dev/sd* | grep sd

but will not be automatically mounted (except if if was present a boot time).

So solution is to mount is manually e.g. if the usb is detected at sdb1 then use this command 

sudo mount /dev/sdb1 /mnt/usb

FYI: i am assuming that there is a usb folder in mnt folder

Adeel Raza Azeemi
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