Is there a way to restart the loader? 

When I first connected to the IPLed image I was disconnected before I
could do any setup.  Now when I login I get a message...

Loader has already been run.  Starting shell.

If I try to rerun the loader I get the same message.

Ruddy A. Melancon
IT System Specialist - ISD
State of Alabama
64 North Union Street
Montgomery, AL  36130
334.353.7275
 
When the only tool you have is a hammer, every problem begins to
resemble a nail.

-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
Vic Cross
Sent: Friday, July 21, 2006 9:56 AM
To: [email protected]
Subject: Re: CentOS DASD format

Richard Pinion wrote:
> Have done the fdasd command?

fdasd comes *after* dasdfmt...

>>>> [EMAIL PROTECTED] 7/21/2006 10:20:13 AM >>>
> I am attempting to install CentOS (Red Hat) v4.2 in a zSeries LPAR
> (standalone).  I IPLed the CD-ROM and I am at the point of havint to
> format the DASD.  I entered:
>
> Dasdfmt -b 4096 -d cdl -f /dev/dasda

Ummm..  I've done several CentOS installations, and I don't recall
having to manually format the DASD on any of them...  When you
SSH/Telnet into the installation system, you end up in the system
installer (Anaconda), which is pretty much a bouncing-ball thing,
including the setup of the DASD.

> It comes back with a message that the file is not available.  When I
> look in the /dev directory there is no dasda, although in looking in
> /sys I can find the file that describes the disk drive as well as the
> file that shows it online.

It's likely that the installer hasn't set up the device nodes for your
DASDs yet -- too early in the piece.

> Where does CentOS put the device descriptor and how do I address it in
> the 'dasdfmt' command?

If you *really* need to format the DASDs manually, you will need to
create the device nodes yourself.  Check to see that the proc filesystem
 is mounted, then issue "cat /proc/dasd/devices" to see what device
major/minors have been allocated to the DASDs.  Then,

"mknod /dev/dasd<an> b <maj> <min>"

with appropriate substitutions for <an> <maj> and <min>, for each of the
nodes you want, will get you started.

But you really should not need to do any of this.  Just follow the
installer's prompts and it should get you there.

Rob's comments are gold as well: ensure that the DASDs are online (cat
the appropriate "online" pseudofile in the sys filesystem directory you
found; a result of "1" is good) and that the DASD modules are loaded.

Cheers,
Vic Cross


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