From owner-freebsd-questions Wed Oct 25 17:41:52 1995 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id RAA04536 for questions-outgoing; Wed, 25 Oct 1995 17:41:52 -0700 Received: from hp.com (hp.com [15.255.152.4]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id RAA04530 for ; Wed, 25 Oct 1995 17:41:50 -0700 Received: from hpautobo.aus.hp.com by hp.com with ESMTP (1.37.109.16/15.5+ECS 3.3) id AA274748074; Wed, 25 Oct 1995 17:41:16 -0700 Message-Id: <199510260041.AA274748074@hp.com> Received: by hpautobo.aus.hp.com (1.37.109.16/16.2) id AA199648072; Thu, 26 Oct 1995 10:41:12 +1000 From: M C Wong Subject: [1.1.5.1] FreeBSD bootblock corrupted ? To: freebsd-questions@freefall.FreeBSD.org (freebsd-questions@freefall.cdrom.com) Date: Thu, 26 Oct 95 10:41:12 EST Mailer: Elm [revision: 70.85] Sender: owner-questions@FreeBSD.org Precedence: bulk -----BEGIN PGP SIGNED MESSAGE----- Hi, My hard disk has developed some bad sectors and seems as if it has corrupted my FreeBSD boot block. The symptom being that I do not get the FreeBSD boot prompt as before, and the hard disk LED is just on forever and nothing appear on the screen. However, when booting off a floppy and specify sd(0,a)/386bsd to boot (yes, I have a wd0 and sd0, and I undefine wd0 from BIOS setup to let the system boot off sd0 normally), it can boot properly. I first suspected the mbr corruption, and ran fdisk /mbr upon boot up from a DOS boot disk. That doesn't fix the problem. Now I suspect my FreeBSD boot block gets corrupted. Can someone tell me the right command to re-install the bootblock, I remeber something that involve /usr/mdec/sdboot and /usr/mdec/bootsd, but can't remember the exact command. Thanks in advance. -----BEGIN PGP SIGNATURE----- Version: 2.6.2i iQCVAwUBMI7ZIkmThh0X7Um5AQF45QP/UWkXQ4gkqEGJCBDr8CjfWN97dO3rh8sr WMXnH0J4njJ2IK2o5hFcu1FmDkRvflBZyNRqylinlPZkX84rvBw7Brh2+qLm641A t4f+iAnF/ncAw+2b0gLARJEYCWezVnyk8cI7SDPZU79Qpl8FzmQIU6MhMcTaEWGR N7XzaJMGvcY= =mdRA -----END PGP SIGNATURE-----