On Fri, 2 Jun 2006, [iso-8859-1] Leland Lucius wrote: > Are there any issues/gotchas/watchouts with placing these areas on a disk > other than the sysres?
I always maintain a tiny VM system for quick experimentation, investigation, even forensics. For this, I take inspiration from CMS, and the IPL disk is NOT the run disk. Where CMS splits 190 and 191, similarly I like to split 1A0 and 1A1, the latter having directory, spool, as well as checkpoint and warm start areas. Eventually, I wind up making the 1A1 bootable too, as things evolve, always keeping something pristine on 1A0. Note that the IPL-time parm area must be on the same disk as the nucleus, so a CF0 on the 1A0 and a CF1 on the 1A1 happens. (Actually, CF0 *is* the 1A0. Read on.) 1A0 can be fully CMS formatted, which makes a great entry point: Format (RECOMP to take back one cylinder for SALIPL, then put your CP nuc and SYSTEM CONFIG there. You'll have to put a usable CP dir object onto your 1A1, but you were going to do that anyway, right? Then IPL the 1A0. CP (second level) will have no problem seeing a CMS volume on 1A0. Now ... you were simply asking about splitting cktp and warm onto another volume from sysres. I guess the point of this is: define sysres. Is it the 1A0? You might have booted from there. Oh ... and it could be read-only. Or is the sysres that 1A1 disk? The nuc wasn't there, at least not initially. -- R;
