Chapter 5. S/390 operating system installation 53
install.) The base volsers were: DMTRES, DMTCAT, DMTOS1, DMTOS2, and DMTOS3. We
installed these as follows:
򐂰 Insert first CD in the CD-ROM drive and wait for Linux to open a window displaying the
contents of the CD. You could also use an ls command to display the contents:
$ls /mnt/cdrom (To display the contents of the CD)
dmtres.tar flexes.rsc flexes.sys ipl300 README.TXT
sg24-6834-00 startFlex startRes
򐂰 After inspecting the contents, we wanted two FLEX-ES definition files from the CD for later
use. We copied them into the rundir directory:
$ cp /mnt/cdrom/flexes.rsc /usr/flexes/rundir/DDrsc
$ cp /mnt/cdrom/flexes.sys /usr/flexes/rundir/DDsys
򐂰 Untar the emulated volume into our /s390 directory:
$ cd /s390
$ tar -zxvf /mnt/cdrom/dmtres.tar
(Close the CD-ROM automount window, if it is open)
$ umount /dev/cdrom
(Remove the CD)
򐂰 Install the next CD and untar the contents, following the same pattern.
We then customized the FLEX-ES definitions that were on the first CD and created a shell
script to help start this system. Our FLEX-ES definitions and the shell script are listed in
“Definitions for the Dallas DEMOpkg” on page 92. The original definitions (from the CD) were
in files DDrsc and DDsys; we merged these into a single file, DDdef. We determined the
addresses (S/390 device numbers) to use by studying the sample definitions and the
documentation provided with the CDs.
We compiled our definitions, started the FLEX-ES resource manager, started S/390
emulation (with the shell script), and IPLed our system:
$ cd /usr/flexes/rundir
$ cfcomp DDdef (Our FLEX-ES definitions)
# su (Must be root to start resource manager)
# resadm -s DDR.rescf (Start resource manager)
(pause) (Wait about 5 seconds)
# resadm -r (To confirm that it started OK)
# exit (Leave root)
$ sh shDD (Start the shell script)
flexes> ipl 0300 0301DP.1 (IPL the Dallas DEMOpkg system)
We then logged onto TSO as SYSPRG1 (with the initial password the same as the userid).
The functions described here (cfcomp, resadm, shell scripts, the
flexes> prompt) are described
in the next chapter. They are presented here for completeness. (Please note that our choice
of DDR as a resource file name is not related to the DDR program often used with z/VM.)
5.4 OMA/2 distributions
The most likely use of an OMA/2 distribution is for z/VM. The following material describes the
initial steps for this process.
We started with two CDs in a package labeled Product Package 3390 DDR for z/VM Version
4 Release 3.0. Examination of the first CD disclosed two directories: tapes and 9999. The

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