Maybe is a permission issue: try to do that as root.
With "mount" you can check what is mounted,where and how: maybe you mounted the ext drive ro instead rw.
Max
http://www.shockfamily.net/cedric/knoppix/#usb
http://www.novell.com/coolsolutions/feature/11611.html
http://www.knoppix.net/forum/viewtopic.php?t=27892
Although this is topic was discussed before, and as you can see in the first link it is straighforward (although it is knoppix V3.xx).
but mine does not work, I do not why!!!!,,,,external usb HD 120 GB came under name sdb1,,,,and I did right click and mounted to /media/sdb1 (default location).
I changed permisson for external usb HD to read and write as well.
When i tried to use "copy to" (because I could not find copy and paste,,,,Is it there or not by default) option to copy "MyData" form sda1 (winodws C drive) to /media/sdb1 it gave me this error message:
Code:Error Could not make folder /media/sdb1/MyData
Maybe is a permission issue: try to do that as root.
With "mount" you can check what is mounted,where and how: maybe you mounted the ext drive ro instead rw.
Max

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