[syslinux] CD-ROM won't boot. BIOS problem?

[Anmol Khirbat]

On Thu, May 06, 2004 at 10:48:01AM -0700, H. Peter Anvin wrote:
> Anmol Khirbat wrote:
>
> >I removed my hard disk. It didn't make any difference. 
> >
>
> At this point we'd pretty much be talking about a custom debugging
> effort, which I'm a bit reluctant to undertake for time reasons,
> especially since you clearly have a bug in your system (DL = 80); 


I plugged the hard disk back in the mainboard. The CD-ROM board has
room for another hard drive, so I plugged one in there too.

hda: FUJITSU MHT2060AT, ATA DISK drive
hde: CD-224E, ATAPI CD/DVD-ROM drive
hdh: IC25T060ATCS05-0, ATA DISK drive

Now my debug CD tells me this.
ISOLINUX 2.08 2003-12-12 Copyright (C) 1994-2003 H. Peter Anvin
isolinux: Starting up, DL = A0
isolinux: Loading spec packet failed, trying to wing it...

There are no more messages and looks like the system is hung. I then
removed the hard drive from the mainboard and got this.

ISOLINUX 2.08 2003-12-12 Copyright (C) 1994-2003 H. Peter Anvin
isolinux: Starting up, DL = A0
isolinux: Loading spec packet failed, trying to wing it...
isolinux: Extremely broken BIOS detected, last ditch attempt with
drive = A0
isolinux: Loading main image from LBA = 000028C1
isolinux: Sectors to load = 0004
isolinux: Loaded boot image, verifying...
isolinux: Main image read, jumping to main code

There were a few more messages before I got the menu and everything
worked. Does this information tell us more? I read the comments in
isolinux.asm. Is function 4B01h broken or unimplemented on my system?
Is there a way I can verify this?

Thanks,
Anmol
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