One nit. Instead of saying "Access to the disks from another OS should be restricted to time when Linux is down," it would be more appropriate to say "Access to the disks from another OS should be restricted to when those disks are unmounted from the Linux system." Depending on what disk we're talking about (such as root) the system might have to be down for them to be unmounted, but that's not always the case.
Mark Post -----Original Message----- From: Rob van der Heij [mailto:[EMAIL PROTECTED]] Sent: Friday, March 15, 2002 11:01 AM To: [EMAIL PROTECTED] Subject: Re: can I boot Linux off either cdl or ldl formatted disks? >Hope you folks dont mind simple questions ;-) Ah, so that must be the reason everyone has these questions ;-) >Can I ipl a Linux image off either a cdl or ldl format disk? Yes. You need run zipl (for the Linux 2.4 distro - zilo, silo for older). It should work with either cdl and ldl format. >I am going to try this and see if it works but I thought I'd ask and see >what I can learn. BTW ... could somebody point me to a good explanation >of cdl v/s ldl? CDL is compatible with the standard format for S/390 DASD devices, so your other IBM S/390 Operating Systems like z/OS, z/VM and VSE should be able to access the disks and do a physical backup / restore for exameple. The Linux for S/390 utilities also allow you to cut your enormous 2.3 GB disks into smaller partitions that you can use a separate block devices ;-) and these partitions look to z/OS as datasets. Access to the disks from another OS should be restricted to time when Linux is down. LDL is the older layout that Linux for S/390 invented. It is compatible with nothing except the older Linux dasd drivers (and that is probably the best use for it: to have disks that you can use with the old kernel). Rob
