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While you're reading this footnote and you're doing this on a desktop system, there definitely are arguments for using udisksctl, per wecac's answer. So I've added some polish from the other answers. There are also new mechanisms in higher stacks for mounting devices in a sane and standard way which might not always be available. This answer is almost 6 years old and while the core of it still works, things like fdisk -l aren't the most user-friendly options. When you're done, just fire off: sudo umount /media/usb You can usually use /mnt/ if you're being lazy and nothing else is mounted there but otherwise you'll want to create a new directory: sudo mkdir /media/usbģ. This needs to be mounted into the filesystem somewhere. Anyway, find it and remember what it's called. The more disks you have the higher the letter this is likely to be.
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You're looking for a partition that should look something like: /dev/sdb1. To do that fire off one of the following (ranked in order of my preference): lsblk You'll need to know what the drive is called to mount it.
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