How to Find the Device Associated with a Mounted USB Drive in Linux

Question

How do you find the device (e.g. /dev/*) for a mounted USB drive in Linux (Ubuntu 10.04)? I'm trying to format a Cruzer USB flash drive, and when I plug it in, the icon for the mounted filesystem appears on my desktop. However, when I open GParted, it doesn't list the filesystem as an option to partition.

The recommendations I've found through Google include monitoring tail -f /var/log/messages, which they claim should list the device name when the drive is mounted, but this never happens for me. I've also read that the USB drive would usually be linked to /dev/sdb, but this appears as a broken link on my filesystem. How else would I find the device?

Solution 1

You can look at mount, dmesg, /proc/partitions... There are many ways to find it.

Solution 2

df gives information regarding mounted disks and their respective device locations and FS paths. You can also run cat /etc/fstab file to see if the USB drive is listed.

Comments

[Jarvin]

Ya, dmesg will tell you the device when you plug it in... unlike the others, it'll tell you the device even before it is mounted (which it sounds like it isn't automatically being mounted to an actual directory for you). Look at dmesg right after plugging in your USB stick.

[Cerin]

Thanks, I found that by running "mount" I get a list of all mounted devices and their file locations.

[John C]

+1 for mount. The clonezilla docs say to use dmesg to find the name of my usb drive, but that generates several pages of information. mount was a lot shorter and simpler.

[dotancohen]

This really is the best answer.