Linux

How to mount a usb drive on a Linux Machine

mounting a USB drive

Mounting a USB Drive On Linux

First, determine the mount point’s location by listing the root directory.

root@xxxxxx:/# ls
 bin        dev           home        lib64     media  
 opt         root          sbin      sys         usr
 boot       etc           lib       lost+found  mnt     
 proc        run           srv       tmp        var
root@axxxxx:/# cd mnt
root@xxxxxx:/mnt# ls

root@xxxxxx:/# !Here no storage devices mounted(Note)

Creating a Mount point: A mount point is a location on your directory tree to mount the partition. The default location is /media although you may use alternate locations such as /mnt or your home directory.

Note: We are using /mnt here to mount point (mnt) and the partition (usbdrive).

root@xxxxxx:/# mkdir /mnt/usbdrive
root@xxxxxx:/#
root@xxxxxx:/#
root@xxxxxx:/# ls /mnt/

usbdrive

Created the USB drive partition here.

Mounting the USB Drive

(A) Note: Here i used “TAB” to display both device node

root@xxxxxx:/# mount /dev/sdc
sdc sdc1

(B)—root@xxxxxx:/# mount /dev/sdc1 /mnt/usbdrive/

Now listing the mount driveand partition we have

 root@xxxxxx:/# ls mnt/usbdrive/
 dump lost+found

How to get a usb uuid to make the partition auto-mount

First find out the UUID by using this parameter ( /dev/sda3) or ( /dev/sdxy)
or alternatively by doing (sudo blkid)

root@xxxxxx:/# ls /dev/disk/by-uuid/
 16b4a593-92ed-4ea0-b7ef-72b6a655c554 b505d17c-eaab-48ab-af5d-922267d4bfee
 190D-B412 b7cf9ba6-f97b-4863-8c94-2973d09bbe6c
 4aa11a9a-ebda-41c9-b694-a12a00f0100f fe932ccb-2ebe-4727-a5ea-d70142ed371f
 667e0094-352e-461c-a568-e182677465fb

root@xxxxxx:/#

Note: Partitions listed in fstab may automatically mount during the boot process with configuration.
Only ROOT can mount a device/partition not listed in fstab.

Now to make the usb persistant when ever it reboots, you have to edit /etc/fstab file and also specify the file system.

root@alaska:/# nano /etc/fstab
# <file system> <mount point> <type> <options> <dump> <pass>
 /dev/pve/root / ext4 errors=remount-ro 0 1
 /dev/pve/data /var/lib/vz ext4 defaults 0 1
 /dev/pve/swap none swap sw 0 0
 proc /proc proc defaults 0 0
 /dev/disk/by-uuid/16b4a593-92ed-4ea0-b7ef-72b6a655c554 /mnt/usbdrive ext4 defaults 0 1
 Note: we added the last line above for the mounted usb

How to use the cat command to view it

root@alaska:/# cat /etc/fstab
 # <file system> <mount point> <type> <options> <dump> <pass>
 /dev/pve/root / ext4 errors=remount-ro 0 1
 /dev/pve/data /var/lib/vz ext4 defaults 0 1
 /dev/pve/swap none swap sw 0 0
 proc /proc proc defaults 0 0
 /dev/disk/by-uuid/16b4a593-92ed-4ea0-b7ef-72b6a655c554 /mnt/usbdrive ext4 defaults 0 1

Dump and Pass explanation: Dump: This field sets whether the backup utility dump will backup file system. When set to “0,” the system ignores the file system; when set to “1,” it backs up the file system.

Dump is seldom used and if in doubt use 0.

root@xxxxxx:/#

Note: Pass (fsck order): Fsck order is to tell fsck what order to check the file systems, if set to “0” file system is ignored.

Often a source of confusion, there are only 3 options :
0 == do not check.
1 == check this partition first.
2 == check this partition(s) next
In practice, use "1" for your root partition, / and 2 for the rest.
All partitions marked with a "2" are checked in sequence and you do not need to specify an order.

See these links for more information on how to mount a usb drive
http://unix.stackexchange.com/questions/72393/mounting-all-partitions-on-hard-disk-automatically-on-linux-mint
http://askubuntu.com/questions/45607/how-to-mount-partition-permanentlyhttps://wiki.archlinux.org/index.php/USB_storage_devices
https://help.ubuntu.com/community/Fstab

Also See the #man mount on any of your favourite linux distribution.

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