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Well, i recently installed Ubuntu 14.04 in a HDD of 640 GB capacity. After the installation, I decided that i should partition my HDD so to have on the one partition the os and some other files (320 gb) and save to the other partition my video-edit works (320 gb). And I did so using the Ubuntu 14.04 live cd and gparted. I formatted the new disk part "with" ext4. But then something wird happened: While i am using ubuntu without any problem, i cannot edit the second partition, which means that i can't save or create something there! Ubuntu says that I am not the owner!! Why?? I need to solve this immediately!

EDIT: Both of these two solutions below worked for me! However, faster way proved to be the one I have chosen!

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Is your partition automatically mounted somewhere? What does mount says about mounted partitions? If you can mount it, what's who's the owner of the mount point? – Sergey P. aka azure May 15 '14 at 16:13
up vote 0 down vote accepted



in terminal and find the partition which you want to change ownership

my output looks like enter image description here

if I want to change ownership of partition /dev/sd8 which is a ext4 partition and mounted on /media/bibi/films

you can also check ownership of mounted partitions with command

 ll /media/bibi

as you can see my films folder is owned by root

enter image description here

To change the ownership I have to run

sudo chown -R bibi:bibi /media/bibi/film

enter image description here

you have to substitute bibi with your user name

It is explained here

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Thank you very much! I am new to Ubuntu, so I didn't know that! :D – user258486 May 15 '14 at 16:33
if it solved your problem you can accept the answer :) – Bibi424 May 15 '14 at 16:37

Because the partition was created outside your Ubuntu installation, it is owned by some other user, probably the super-user of the live cd. You can either reformat the partition inside Ubuntu and assign it to the current user or simply change read/write permissions so that the current user has access to that partition. This might also require giving the current user permissions to mount that partition.

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Thank you!!! :D – user258486 May 15 '14 at 16:34

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