Thank you all for your responses.
It appears that changing /etc/zipl.conf instead of /boot/zipl/parmfile
was the correct way.
Since I am out here by myself, with old redbooks, it is good to know
taht there are people who are knowledgeable and willing to share their
experiences.

Thanks again to you all

Post, Mark K wrote:

On SLES8 systems (default, out of the box), the kernel modules and the
script that invokes them are all in the initrd.  At the time the DASD driver
gets loaded by that script, there is no way for it to be able to access the
contents of anything on disk.  If you're not using an initrd, then of course
you don't have to rebuild it.  If you are using SLES8 with an initrd, then
the HOWTO I referenced is applicable, and has fixed the problems many people
on this list have had with SLES8, since it acted differently than previous
SUSE platforms.


Mark Post -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Hall, Ken (IDS ECCS) Sent: Thursday, April 01, 2004 4:18 PM To: [EMAIL PROTECTED] Subject: Re: new disk for linux


Uh, yes it does.


Whether or not an initrd is used, the DASD parm comes from the boot
parameter file created by zipl.  That's on the disk you boot from, which may
or may not also contain the root filesystem.  (In my case it does.)

I just changed /etc/zipl.conf on my test system, ran zipl, and rebooted.
The change was reflected in /proc/dasd/devices.  I've never had to rebuild
the initrd manually.

The only time you have to update the initrd is when you do a kernel upgrade,
and if you're using the RPM packaged kernels, that's taken care of by the
install.



-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of
Post, Mark K
Sent: Thursday, April 01, 2004 4:01 PM
To: [EMAIL PROTECTED]
Subject: Re: [LINUX-390] new disk for linux


Umm, no, it does not. With SLES8, SUSE went to using an initrd. The HOWTO I referenced in another reply talks about how to update that.


Mark Post


-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
Hall, Ken (IDS ECCS)
Sent: Thursday, April 01, 2004 3:47 PM
To: [EMAIL PROTECTED]
Subject: Re: new disk for linux


I think you added the device to the wrong file. I usually add it to /etc/zipl.conf, then run zipl. I believe zipl copies zipl.conf to the /boot files (among other things).



-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of
Scorch Burnet
Sent: Thursday, April 01, 2004 3:44 PM
To: [EMAIL PROTECTED]
Subject: [LINUX-390] new disk for linux


I am trying to add another disk to one of my SLES8 Linux images on z/VM. I added the mdisk statement to the user direct, excuted the directxa, and logged onto the guest. after cms formatting the new mdisk, iI added the new disk address to /boot/zipl/parmfile and ran zipl.

After rebooting, I expected to be able to format and


partition the new


disk, but I do not see it in /proc/dasd/devices.

Can someone give me a list of the steps I need to perform


in order to


add this new dasd to my linux machine.

any help is appreciated




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