In order to run the installation system a working network setup and ssh session is needed on S/390.
The booting process starts with a network setup that prompts you for several network parameters. If the setup is successful, you will login to the system by starting an ssh session which will launch the standard installation system.
On S/390 you can append boot parameters in the parm file. This file can
either be in ASCII or EBCDIC format. It needs to be fixed-width with
80 characters per line. A sample parm file
parmfile.debian is provided with the installation
images. If a parameter is too long to fit into the 80 characters limit
it can simply be continued in the first column of the next line. All
the lines are concatenated without spaces when being passed to the
If you boot the installer in a logical partition (LPAR) or virtual machine (VM) where a lot of devices are visible, you can instruct the kernel to restrict the list to a fixed set of devices. This is advised for the installer's boot process if a lot of disks are visible, most likely in LPAR mode. The “cio_ignore” option supports both a blacklist (to only disallow a few devices) and a whitelist (to only allow specific devices):
# blacklist: just ignore the two devices 300 and 301 cio_ignore=0.0.0300-0.0.0301 # whitelist: ignore everything but 1150, FD00, FD01 and FD02 cio_ignore=all,!0.0.1150,!0.0.fd00-0.0.fd02
Please note that all devices numbers' hex digits need to be specified in
lower case. Furthermore if this boot parameter is used all devices
need to be listed: this includes at least disks, network devices and
the console. To be considered during the installer's boot process the
above option needs to be added to