> >> dd if=/dev/zero of=/file/to/create bs=<whatever> count=<whatever> > > > > Though a holed file cannot be made by this method, this is a good idea. > > Yes you can. > > dd if=/dev/zero of=/file/to/create bs=<whatever> seek=<whatever> count=1 > Perfect! Thanks a lot, Juha. Later, I found that http://www.opengroup.org/onlinepubs/007908799/xcu/dd.html says "seek=" is a standard option of dd. ///Hiroki Horiuchi