Hello, We have a weird problem and I wonder if someone else came accross the same : - we install SL3.02 on Dell Optiplex GX280 equipped with SATA disks. they boot OK - then we execute a small script that defines a grub password for modifying kernel parameters at boot time : the file /etc/grub.conf is modified this way : sed -e "s/splashimage/password --md5 ${MD5PASSWD}\nsplashimage/g" \ < grub.conf > grub.conf.new mv grub.conf.new grub.conf and we re-install grub : /sbin/grub-install /dev/sda => We get an error message when executing /sbin/grub-install /dev/sda saying that it is not defined in BIOS => The workstation is then unable to boot like if the MBR had been corrupted. The string "GRUB" is displayed and the boot process stops here. Any similar experiences or ideas ? Thank you. JM -- ------------------------------------------------------------------------ Jean-michel BARBET | Tel: +33 (0)2 51 85 84 86 Laboratoire SUBATECH Nantes France | Fax: +33 (0)2 51 85 84 79 CNRS-IN2P3/Ecole des Mines/Universite | E-Mail: [log in to unmask] ------------------------------------------------------------------------