On Fri, 30 Nov 2007 09:55:22 -0600, Mike Walter <[EMAIL PROTECTED]> wrote:
>Responding to both Marcy and Bob's points, I give a fresh MDISK to the >Linux sysprog who says that he receives errors when running dasdfmt unle ss >CMS FORMAT has been run first. We've been formatting them with CMS for so >long now that I can't recall the error. During the actual dasdfmt run, or during boot? I don't have problems wit h dasdfmt itself. -snip- > We never used the RESERVE command, either. By Dave suggesting it, ther e > seems to be validation that a CMS format was required at some point. Ma ybe > Linux used to need to see the disk label (volser) on cyl 0 (rec 3 ? w/o > looking) of the MDISK. The only reason CMS formatting and RESERVE was ever useful was back in th e old, dark ages of Linux/390, you needed to do that for the DIAG driver to pick up the volume and use it. That hasn't been the case for some time n ow, but of course not everyone realizes that and changes their methodology. Mark Post
