On 6 Sep 2011, at 06:52, hvlems at zonnet.nl wrote: The dd command ought to produce a bootable copy of the cdrom. On Tru64 the correct partition is If=/dev/disks/ cdrom0c When I dd'd off a copy of the VAX VMS CD-ROM it didn't work for me initially either. Now I can't remember which way round it was now, but I think I dd'd the whole CD-ROM and it didn't work and then I dd'd off only the *partition* with the data in and that worked fine. Either that or the other way around. From the looks of the quote above you only need the partition. Memory is terrible, sorry :) -- Mark Benson My Blog: <http://markbenson.org/blog> Follow me on Twitter: http://twitter.com/mdbenson "Never send a human to do a machine's job..."