Ubuntu 14.04 can't recognize USB device

I'm using Ubuntu 14.04 and when I plug my USB key into my laptop it doesn't appear. I also tried to use Gparted to detect it but it doesn't exist here. But using Disks in my OS I can see it. So what's wrong? is it corrupted?

1 Answer

As we can see it in your disks screenshot, try

mount /dev/sdb /mnt

then it shall return something like

mount: /dev/sdb is not a valid block device

This means your Ubuntu can detect the device.

In terminal, type:

sudo su

for root rights and then try

mkfs.xfs /dev/sdb1 && mount /dev/sdb1 /mnt -t auto

I am not near my linux PC, but this might work, try it.