I can't copy files to my memory card.
When i copy there is a error message and it says read-only file system.
But, i can copy file from the card.Can any one please help me.
I am using ubuntu 11.10.
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If these information by wu-lee that can be helpful to you:
"Firstly, make sure the memory card hasn't got the "lock" tab engaged! This is a plastic sliding thing on the side of the card. Sometimes it is loose enough that pushing the card into the slot engages it. To allow writing, the tab should be pushed into the forward position, nearest the contacts.
Now make sure you have write permissions for the device. The memory card device is
/dev/mmcblk0 (other devices will be different), so try this:
$ ls -l /dev/mmcblk0 brw-rw---- 1 root disk 179, 0 2010-08-04 10:35 /dev/mmcblk0
This shows it's readable and writable (rw) by the root user, and the disk group. I'm not root, so am I in the disk group?
$ groups nick adm dialout cdrom plugdev lpadmin admin sambashare
Nope. So how do I become a member? You can set your user's group membership in Applications->settings->sytem settings->advanced->user management (KDE) or in System->Admin->Users and Groups (Gnome). Or you can do it with the command:
sudo usermod -a -G disk $USER
$USER is your user name.
Now check it worked - "disk" should be listed in your group membership, like this:
$ groups nick adm disk dialout cdrom plugdev lpadmin admin sambashare
Typically group membership won't get updated until you open a new log-in shell or start a new session. So you may need to log off and on again, or open a login shell like this:
$ su - $USER -c bash
Now, as a member of the "disk" group, you should have write access to the memory card.