System :: Problem installing kernelsource

Hello,
When trying to install kernelsource.dsl. I am having this problem. Also when I run apt-get I am getting the error "command not found.

dsl@box:~$ mydsl-load kernelsource.dsl
tar: Cannot create directory `usr/src': Read-only file system
tar: usr/src/knoppix-kernel26.patch: No such file or directory

Let me know if you can offer any help.
Thanks,

Chris.

original here.