Pb with /sbin/loader during an s390 mooch u2 install

Hello

When we booted with the kernel.img  and initrd.img images provided with
mooch-s390-u2.iso and answered the initial questions, the linuxrc script
asked us to connect via telnet or ssh.

We did that with the root account in order to launch /sbin/loader. The
result was simply a shell prompt instead of the start of the install
sequence

Has anybody an idea ?

Thank you

/tmp/install.cfg is as follow:

LANG=""
S390ARCH="S/390"
TEXTDOMAIN="s390installer"
TEXTDOMAINDIR="/usr/lib/locale"
CHANDEV="qeth0,0x1000,0x1001,0x1002"
QETHPARM="add_parms,0x10,0x1000,0x1002,portname:vlan01"
HOSTNAME="pyav0006.inetpsa.com"
DEVICE="eth0"
NETTYPE="eth"
IPADDR="10.82.198.6"
GATEWAY="10.82.198.254"
MTU=""
NETWORK="10.82.198.0"
NETMASK="255.255.255.0"
BROADCAST="10.255.255.255"
DNS="10.68.219.100"
SEARCHDNS="inetpsa.com"
LCS=""
QETH="on"
HSI=""
TR=""
IUCV=""
ONBOOT="yes"
export LANG CHANDEV QETHPARM S390ARCH TEXTDOMAIN TEXTDOMAINDIR HSI
export HOSTNAME DEVICE NETTYPE IPADDR GATEWAY MTU
export NETWORK NETMASK BROADCAST DNS SEARCHDNS
export LCS QETH IUCV ONBOOT
export TR

/tmp/anaconda.log content:

* modules to insert vga16fb
* module(s) vga16fb not found
* load module set done
* 254324 kB are available
* modules to insert cramfs vfat sunrpc lockd nfs loop isofs floppy
* loaded cramfs from /modules/modules.cgz
* loaded sunrpc from /modules/modules.cgz
* loaded lockd from /modules/modules.cgz
* loaded nfs from /modules/modules.cgz
* loaded loop from /modules/modules.cgz
* module(s) vfat isofs floppy not found
* inserted /tmp/cramfs.o
* inserted /tmp/sunrpc.o
* inserted /tmp/lockd.o
* inserted /tmp/nfs.o
* inserted /tmp/loop.o
* load module set done
* modules to insert ide-cd
* module(s) ide-cd not found
* load module set done
* modules to insert sd_mod sr_mod
* module(s) sd_mod sr_mod not found
* load module set done
* modules to insert dasd_mod
* loaded dasd_mod from /modules/modules.cgz
* inserted /tmp/dasd_mod.o
* load module set done
* modules to insert dasd_diag_mod dasd_fba_mod dasd_eckd_mod
* loaded dasd_diag_mod from /modules/modules.cgz
* loaded dasd_fba_mod from /modules/modules.cgz
* loaded dasd_eckd_mod from /modules/modules.cgz
* inserted /tmp/dasd_diag_mod.o
* inserted /tmp/dasd_fba_mod.o
* inserted /tmp/dasd_eckd_mod.o
* load module set done
* no firewire controller found
* no pcic controller found
* probing buses
* finished bus probing
* found nothing