Ubuntu – 12.04 run from cd, cannot copy files from mounted disk

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I am running 12.04 live from cd and trying to copy some important files from a mounted hard disk to an external disk. (My previous installation of 10.04 crashed and I want to install 12.04, and back up some data before that).

When I try to copy files from the mounted disk to the external one, I get the following error:

There was an error copying the file into /media/New Volume/L300_Bkp_2012_06_04/pics
Error opening file: Permission denied

Is this related to the source(mounted hard disk) or the target (external disk)?

How do I get around this?

Best Answer

This is mostly related to the mounted hard disk. You can try these to workaround the problem.

Using root power.

Press Alt+F2 to bring dash command prompt. In that window, type gksudo nautilus. This will open nautilus with root permission. Then you can copy the files safely. Remember to close the root powered nautilus after the work finished, also do only what you wanted to copy.

Take ownership of the mounted file system

If the above method does not work, You can use this.

Open a terminal, and type sudo chown user:user /media/New\ Volume to take ownership of the file system. Then copy the files and reboot. Please note, it is only recommended, if the above method does not work.

Hope this will solve the problem

( Credit: This thread )

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