Hi guys, I get some troubles when trying to:
1. login as root in graphic mode (x windows). A message box "root login is not allowed" appeared. What should I do?
2. My flashdisk is not detected. (Adata PD2 /Myflash)
3. All device are read only. I've try 'chmod 777 /mnt/hda1'. But it's failed

Thank you for your answers

Hi Griefond, Welcome to lq. First, you don't need or want to run the gui as root, you would be better served to create a user account and su to root for tasks that require it. KDE even warns against this here.

http://docs.kde.org/userguide/root.html

If you've skipped adding a user account during installation try to see about creating one.

Second, do you mean a usb drive when you say flashdisk? If so, have a look with fdisk.

You'll likely be looking for something like /dev/sda.

Third, Once you get the first two issues worked out you shouldn't have any problems with device permissions unless you've messed them up with chmod. There is a great guide that will help you get through the learning curve here.

http://linux-newbie.dotsrc.org/

I hope some of this helps.
Good luck. ;-)

Thank you for your answers, Peacedog.
It's seems reasonable why we don't need to login as root in KDE
But I still don't understand how to use KDE su.
When I try to press alt+F2, I don't get anything except black screen with console mode...
Altough I turn into 'root' in console mode, Still I can't use this command:
cp /home/music/*.mp3 /mnt/sda1
(My USB flashdisk is mounted in mnt/sda1)

What should I do?

NB: I'm sorry, I'm not a good english speaker,... that's why my threads looks 'strange'

Have you been able to login to the GUI with your user? Is your user name music? What are the permissions on the usb drive? If your logged in to the GUI as your user then open a terminal (Konsole) and su to root if you need it.
Good luck. ;-)

I've been able to login as my user,.... it's very easy,.....
I also have been able to login as root in console (terminal) mode
But, I still can't play music,... or do a lot of thing in non graphical mode.

That's why I want to become root in graphical mode,...

My user name is not a name of music. I just want to copy some mp3 file from my home directory to my USB flashdisk. Sorry I should write
'cp /home/Griefond/music/*.mp3 /mnt/sda1'. My user name is my nick here,... Griefond

The owner of USB device is root,... So that I can't access it except I'm the root,.... (I can access my flashdisk only in console mode by using 'su')

I can copy some files from my flashdisk but
I can't copy any files to my flashdisk

It's my prime problem

By the way,... what linux distribution do you use?

/home/music means your user is music, once your files are copied to your home directory go into KDE and play them

If you're logged into the GUI as your user and you can't play music it's likely a permission problem, if you can't play music at all you've likely not setup your sound card properly. Try running alsamixer and unmute your volume channels.

You probably mounted the device as root. I'm not sure how your install is setup, so try adding this line to your /etc/fstab file.

With that line you should be able to mount the device as your user which should solve any permission problems.


Currently Slack, OpenBsd, FreeBsd, in the past, I've tried most of the major players, Redhat, Mandrake, Suse, Gentoo, Debian, etc. Hope this helps.
Good luck. ;-)

You're right,... it's permission problem.
I've try chmod 777 and it's work,... Thank you,....

I've tried to add
/dev/sda1 /mnt/sda1 vfat user,noauto,umask=0 0 0
to /etc/fstab
But it's doesn't work,...
I've tried to change vfat into auto,... but it doesn't work either,....
No idea,... what should I do....

A lot of thanks after all

Putting "/dev/sda1" in your fstab isn't really a good idea IMO, as you generally can't be certain that your device will always be /dev/sda (unless of course you can be certain!). You should look into making a udev rule for it.

Anyway, you need to say what "doesn't work" actually means. Do you get error messages? Post them..

You're probably trying to mount it via the command line, I was in process of helping you set it up from the GUI since you seem to want to do most things in that interface. Running KDE logged in as user with that line in your fstab and the stick plugged in, right click on your desktop and choose Link to new hard disk. That should give you a selection list of your fstab devices from there choose the usb stick. You should now have an icon on the desktop which you can right click on and mount/unmount your stick.

As the previous poster stated you should look into udev, what I've offered is kind of a band-aid fix.
Good luck. ;-)