Date: Thu, 26 Oct 95 10:41:12 EST From: M C Wong <mcw@hpato.aus.hp.com> To: freebsd-questions@freefall.FreeBSD.org (freebsd-questions@freefall.cdrom.com) Subject: [1.1.5.1] FreeBSD bootblock corrupted ? Message-ID: <199510260041.AA274748074@hp.com>
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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.
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