Hmm. I found answer to scripting cfdisk.

Apprently I can write something like:

sfdisk /dev/hdc << EOF
0,407
,407
;
;
EOF

Sadly it still leaves me a bit clueless as start-end track or whatever the params are really
Ehh? to me. I had kinda hoped on some size param. Maybe I can create it manually and get it to create such nice looking file with that setup??

Thanks