I created a backup file in Raspbian [on my Raspberry 2 Model B] which sits in the /home directory. I want to copy it to my USB stick to the /media/pi directory. The stick is formatted for EXT4. My Raspbian /root is also EXT4.

I tried using the File Manager to copy and paste but got a "Error opening file /mnt/pi/filename.tar.gz:Permission denied" message. I also ran cp from the terminal window and got the message "cp cannot create regular file '/media/pi/filename.tar.gz' : Permission denied". Here's that cp entry:

cp filename.tar.gz /media/pi

Clues would be greatly appreciated. Thank you very much ... Bill Cole

1 Answer 1


You may want to check the owner and access rights with which your ext4 partition has been mounted. A quick solution may be to use sudo cp filename.tar.gz /media/pi to copy your archive file to your USB partition.

  • Thank you very much for the advice. Worked just fine. Very kind of you to take the time to reply to my question.
    – wacole
    Jul 12, 2017 at 19:14
  • You're welcome. If this solves your problem, then please accept this answet; click on the checkmark/tick.
    – TheDiveO
    Jul 12, 2017 at 20:31

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