>Hope you folks dont mind simple questions ;-) As they said in school, there are no stupid questions. If you want to know, there are probably at least 10 others that do too.
>Can I ipl a Linux image off either a cdl or ldl format disk? You Bet. >could somebody point me to a good explanation of cdl v/s ldl? ldl is the linux disk layout. It was the first labeling scheme for linux dasd which used fixed block size records in the DASD label area which maintained compatibility with the idea that you could copy the entire disk using linux tools such as dd and tar. Unfortunately, that constant block sixe broke compatibility with OS/390 so you could not vary Linux formatted volumes online to an OS/390 system. This was a big problem before Linux had a tape driver, as it was quite difficult to backup your system. cdl is the compatable disk layout. It came along with the 2.4 kernel systems and uses an OS/390 compatable DASD label so you can vary your linux dasd online to OS/390 so that you may do your backups there. The partitions appear as sequential datasets to OS/390. It also allows you to have more than one partition per device, up to 3 in fact. Now you can have a 128M (or whatever) swap partition and have the rest of the pack be real filesystem space. Hope this helps, Jay Brenneman
