Hi, I have a 500 G, where 80 are used for FC13. I added a new 80 G partiton, using Disk Utiliy, called it Backup, and I can access it when I am logged as root,
When I log with any other user, even with all privileges (added almost in all groups), I get a dialog box requesting authentication.

I enter my user password, file manage just disappears as soon as dialog box disappears and I think it is a permission issue again.

In disk utility opposite to Device there is "dev/sdb", in mount point there is media/backup.

I opened fstab, I can not see an entry, here is the fstab :

So what is the route to follow to follow to allow my user to access normally read and write to it without anu persmission issues

Thanks for your help

Do you want this partition mounted automatically every time you boot? In this case, you will need to put an entry in /etc/fstab.
Do you want to mount it only when you do a backup? In this case you can mount it manually, or use a script.
You say you added a partition, but that "/dev/sdb" sounds as though you have added a disc drive.
The command fdisk -l will show you what you have in the way of partitions. (You have to be root, so either su to root, or precede the command with sudo)
blkid, again as root, will give you the uuid's of your partitions.
If you want to mount it every time add a line like this to /etc/fstab:
NOTE 0 Replace xxxxxx with the id you get from blkid
NOTE 1You'll need to do for this to work. You could also use /mnt/backup, or pretty much anywhere, but if it's mounted every time you might as well have it directly under / for convenience.
NOTE 2 You could also use /dev/sdxx in place of the UUID. Get the xx from the output of fdisk -l
Note 3 If you're not using ext4 change this in the fstab entry.

If you just want to mount it when you feel a backup coming on:
Make sure you have a folder /mnt/backup, of course.
Ownership/Permissions:
Backing up and restoring is something that is normally done by root. You are best off leaving ownership as root:root (owner root, group root). Permissions would normally be 755 (drwx r-xr-x)

You created a new 80GB partition on your 500GB drive??
What is the partition? sda?
Do you have a mount point /media/Backup created?
The /dev/sdb would be referring to another physical drive. Do you have one?
You would need the actual mount point and the partition and put an entry in fstab similar to the last line.

Thanks for both of you.
In fact I am not so expert in linux admin, I am more a developer.
What I am trying to do is have a a partition where I put my data.
Whne I have installed fedora, I made fedoras decide the layout but indicated to have 80 G for filesystem, 4G for swap.

Then later, I decide to have a different partiton for my data available (mounted automatically every time I boot) for all users not only for root.

So what I did is used Disk utility > Format drive > gave the size then mount.
I found my self having Device = "dev/sdb", in mount point =media/backup. This is all done by fedora.

So to respond to your queries :

Yes I want this partition mounted automatically every time you boot?
Yes, I want other users acces it normally, create, write, execute....
No, I dont want in the "/" nor mount, I would like to have it as independant disk

I issued the
, the partition in question highlighted in bold

Now impert, why do I need to issue the command
mkdir /backup

It is mounted and I can see it. ROOT user can create files and directories, so why to allow my user to do the same thing I need to do all this, just for my understaning if you allow me.

I added the following to fstab

rebooted, logged with my user I dont see the partition anymore.

dfdf

OK, reading between the lines you are at present letting Nautilus (or whatever other file browser you use) automatically mount it as if it were a USB device or a CD. Which is why you are getting the default behaviour that you are seeing.
If you want to mount it every time in a somewhat more formal way, then put it in /etc/fstab as I suggested above. To do this you need to make a folder somewhere, and that folder has to have a name. I suggested /backup so it will be at the top of the tree and easily accessible. It has to be in /, because everything is - everything that your system can see, that is. When it is mounted automatically at present, it is in /media, which is in /.
I've already said that you would be better to leave it owned by root, and only writeable by root, but if you still want to give read, write, and execute permissions to everybody, then the command is:
It's a good idea to look at the man pages for each command before you use it
man chown, man mkdir, etc. First look up man itself: man man so you get to understand the syntax.
If you type
you should see it, with its permissions. You can also navigate to it with the file browser: just click on Places>File System.