Thanks for your response, Arun, Unfortunately the three scsi devices are not identical. The old sda and sdb are two internal raided file systems on two 3ware 8 port PATA controllers, and the new one is an external raid brick fed through a USCSI 160 controller. I cannot make any physical change on the scsi devices. Peter -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Arun Williams Sent: 08 June 2006 09:08 To: General Red Hat Linux discussion list Subject: Re: Boot loader problem after addiing SCSI disk As per new configuration replace the sda disk with sdb , sdb with sdc and sdc with sda. Keep ur grub and mbr in old configuration. This might work. "Chiu, PCM (Peter)" <P.C.M.Chiu@xxxxxxxx> wrote: I have hit a problem in booting up a RH 9 box after adding a SCSI disk. The boot process pauses after displaying: GRUB Loading stage 1.5 GRUB Loading, please wait... The machine does not show any response, not even Control-Alternate-Delete. I boot off RH9 CD and started off Linux rescue mode. I can see all the existing scsi disks as well as the new one - though somehow, the new one becomes sda, and the old sda becomes sdb, and the old sdb becomes sdc. I tried to reset the MBR with grub-install /dev/sdb but same result. I have also tried replacing all references on hd0,0 to be hd1,0 in grub.conf, and reapply grub-install /dev/sdb, still no joy. Any idea anyone? Thanks. Peter -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list ____________________________ Regards A.Williams IN THIS WORLD FULL OF DREAMS AND IMAGINATION, LOOK FOR POSSIBILITIES... Send instant messages to your online friends http://in.messenger.yahoo.com Stay connected with your friends even when away from PC. Link: http://in.mobile.yahoo.com/new/messenger/ -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list