automate disksuite installation (jumpstart server)

[Bandybe]

I had a jumpstart server on a solaris 8
I install a server with solaris 8 release 04/01.
In the finisch script of my jumpstart server a copy in /etc/rc3.d S999conf :

/bin/ksh /newinst/bin/autoreboot

/newinst/bin/autoreboot :
#!/bin/ksh
#set -x
conf=/newinst/bin/reboot.conf
ftmp=/tmp/tmp.$$
integer nb=`wc -l $conf|cut -d'/' -f1`
if [ nb -gt 0 ]
then
afaire=`head -1 $conf`
let nb=nb-1
tail -${nb} $conf > $ftmp
mv $ftmp $conf
ksh $afaire
reboot
else
rm /etc/rc3.d/S999conf
fi

in /newinst/bin/reboot.conf :

/newinst/bin/disksuite
/newinst/bin/nrbcluster
/newinst/bin/software

in disksuite :
/newinst/bin/PkgFile.sh . SUNWmdr
/newinst/bin/PkgFile.sh . SUNWmdg
/newinst/bin/PkgFile.sh . SUNWmdu
/newinst/bin/PkgFile.sh . SUNWmdx

in /newinst/bin/PkgFile.sh
#!/bin/sh
ADMIN_FILE=/tmp/admin

cat >${ADMIN_FILE} <<DONT_ASK
mail=root
instance=overwrite
partial=nocheck
runlevel=nocheck
idepend=nocheck
rdepend=nocheck
space=ask
setuid=nocheck
conflict=nocheck
action=nocheck
basedir=default
DONT_ASK

/usr/sbin/pkgadd -a ${ADMIN_FILE} -d /newinst/Packages/$1 $2
rm ${ADMIN_FILE}


and at the boot I have this error

Solstice DiskSuite Drivers
(sparc) 4.2.1,REV=1999.12.03.10.00
Copyright 2000 Sun Microsystems, Inc. All rights reserved.
## Executing checkinstall script.
pkgadd: ERROR: freopen(/dev/tty, &quot;a&quot;, stdout) failed, errno=6 [/color red]
pkgadd: ERROR: checkinstall script did not complete successfully
Installation of <SUNWmdr> failed.
No changes were made to the system


But if I run disksuite script at the command line, everythink goes well.
I install other package with the same procedure et all was ok....

Any one have a idea ?
Andrew