Mounting a USB Thumb Drive with the Raspberry Pi

This is another one of my “meat-and-potatoes” Raspberry Pi Instructables.

What this Instructable will show you how to do is to configure your Raspberry Pi to recognize and automatically mount a USB thumb drive. This is especially useful for exchanging files, running backups and using your Pi as a media device.
Mounting a USB Thumb Drive with the Raspberry Pi
Before doing this Instructable, please make sure you have your Raspberry Pi up and running, which you can do with The Ultimate Raspberry Pi Configuration Guide Instructable.

I’m using the Mac OS for this guide, but you can extend the principles to other operating systems.

Step 1: Format the Thumb Drive

Using Disk Utility, format the thumb drive as an MS-DOS (FAT) volume, which is a format that the Pi can easily recognize.

Step 2: Run package updates

I’m using ssh to access to Raspberry Pi. My IP address for the SD card for this is Your IP address may be different — just change the address accordingly.Open the Terminal window and on the command line, type:
ssh [email protected] you are running directly hooked into the monitor, you can skip this step.

Run the latest package update and upgrades, just to make s

ure everything is current — you will have to have wifi access for this step.

First the update:

sudo apt-get update

Then the upgrade:

sudo apt-get upgrade

You’ll see a spool of package updates, which will take several minutes.

Step 3: Set up a “mounting point” for the USB drive

Now, unplug your USB power cable. Put the formatted USB drive into the Raspberry Pi. And turn the Pi back on.
I’m not sure if this matters, but I always leave the

wi-fi dongle in the lower USB port and use the upper one for the external USB drive/keyboard/other things.
Wait a few seconds and then ssh back into the Pi.

ssh [email protected]

What we then type in;

mkdir usbdrv

What we are going to set up is a mount point — a way to always map this directory to the USB drive.
now, type in:

sudo blkid

check out output — we are looking for the USB d

rive device info, which is easy to identify because we called it GITPI when we initialized it.
Mine reads:
/dev/sda1: LABEL=”GITPI” UUID=”6D34-1514″ TYPE=”vfat”
This should be the similar on yours: /dev/sda1 is the USB thumb drive device.
Now, we are going to edit what is called the file systems table to make the USB drive map into the usbdrv directory
Type in:

sudo nano /etc/fstab

Here is the tricky part. We are going to modify the fstab file so that this device maps to the usbdrv directory.
add the line to the end of the file (you can copy and paste this line)

/dev/sda1        /home/pi/usbdrv       vfat    uid=pi,gid=pi,umask=0022,sync,auto,nosuid,rw,nouser 0   0

important: this is 1 line, not broken up over

two lines  (the Instructable is doing weird things to the formatting).

Mounting a USB Thumb Drive with the Raspberry Pi

What this does is to map the /dev/sda1 device — any thumb USB drive to the usbdrv directory. The flags are ones that I cribbed from the Thomas Loughlin guide. Admittedly, I’m not sure exactly what they do, except for allow the drive to be a read-write drive and not tied to a specific user.



For more detail: Mounting a USB Thumb Drive with the Raspberry Pi

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