*BSD News Article 67248


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: When booting, get Error: C:1286 > 1023 (BIOS limit). Then it hangs.
Date: 30 Apr 1996 07:18:08 GMT
Organization: Private FreeBSD site, Dresden
Lines: 28
Message-ID: <4m4erg$5k3@uriah.heep.sax.de>
References: <4ls0g6$d7h@tribune.concentric.net>
Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
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verba@cris.com (Paul Verba) writes:
>During the boot, it says 
>
>>> FreeBSD BOOT @ 0x10000: 640/7168 k of memory
>Use hd(1,a)/kernel ....
>
>....ect....
>
>Boot:
>Error: C:1286 >1023 (BIOS limit)

Your root partition extends beyond cylinder 1023 from a BIOS point of
view, and your /kernel actually sits behind this limit.  Short of a
full reinstall, this is not easy to fix.  (You could perhaps chose
another geometry translation scheme in your BIOS, and fixup all the
fdisk entries, but it's dangerous.)

In case this started to happen with a custom kernel but your previous
kernel used to boot (since it was incidentally all below cylinder
1024), boot this one, and backup what you need.  Once the kernel has
been fully loaded, the above is no longer a problem.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)