Mount External Hard Drive On Raspbian

how to mount external hard drive on raspbian

January 31, 2017 - 2 minute read -
Raspberry

For Raspberry Pi, it only needs a normal SDcard burned with the runnable OS image, like Raspbian. And you may also need to expand the filesystem to ensure all of the SDcard storage is available to the OS, see how to fix raspbian no space issue.

But that small SDcard is not enough and suitable to work as storage if we want to build something like NAS, we need to attach additional hard drive to the Raspberry Pi to act as a powerful and trustable storage.

Here is the guide that show you how to mount external hard drive on raspbian.

  • Check Attached Storage Devices

    sudo fdisk -l
    # we will mount /dev/sda2 to /mnt
    

    fdisk

  • Mount Device

    sudo mount /dev/sda2 /mnt
    # folder "/mnt" is the standard location for mounting, but it is up to you.
    

    That’s it, the drive is mounted.

  • Grant Permission

    sudo chmod 775 /mnt
    # verify
    cd /mnt
    ls
    touch test.txt
    

    Then done! So now we can read and write to the hardrive through Raspberry Pi!
    If you still cannot do that even with root user, and occur the error ‘Operation not permitted’, please follow the solution here:

    • check whether the mounte drive is in NTFS with command: sudo blkid
    • If so, you need to install lib ntfs-3g with command: sudo apt-get install ntfs-3g
    • reboot RPi
  • Automount

    If you want to mount that drive from boot, we need to finish the last step!
    Add one more line /dev/sda2 /mnt ntfs defaults,umask=0002 0 0 to file /etc/fstab(split with tab). fdisk Try to reboot your RPi to verify the automounting. ✔️


How to unmount?

sudo umount /mnt

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