Syslinux - May 2002 - ISOLINUX help requested (checksum error)

Hi Mr Anvin,

after downloading the Freedos bootable cd, which now uses your projects 
(ISOLINUX & MEMDISK) instead of Bart Lagerweij's DISKEMU (www.nu2.nu), I
contacted the creator of the freedos cdrom. I was interested in how he did 
make that cd bootable.

Now I understand it a bit.
As I'm a MS Windows user, I had to figure some things out.
However, upon booting I get a beautiful message:
"isolinux 1.72 2002-04-23: isolinux: image checksum error, sorry"

I was expecting to see the syslogo.lss you have pre-generated (as I don't 
know if I can generate your .lss format in windows using Perl, and don't 
know source format of picute (*.png I guess...))

As authoring program I used Ahead Nero Burning Rom(e) (www.ahead.de)
with following settings:
*Bootable cdrom
*No-emulation
*x:\isolinux\isolinux.bin
*bootsector count 4
*segment 07C0 for starting.

Maybe I miss some information?
I hope you are able to receive attachments (isolinux.cfg / bootmsg.txt)
I suspect the error in bootmsg.txt first 2 lines where I want to load your 
graphics file.
Ctrl-X followed by filename, then newline (CR/LF), then CTRL-Y

These characters are hard to generate in Windows standard tools 
(notepad/edit/word) so I used UltraEdit 9.00)

so, if you happen to be willing to help me out (or do I subscribe on a 
mailing list? The syslinux mailinglist is also for dumb questions like mine 
too?), I'd be very grateful.

Bernd Blaauw, Netherlands

_________________________________________________________________
Download MSN Explorer gratis van http://explorer.msn.nl/intl.asp.
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BBL blue wrote:
> 
> As authoring program I used Ahead Nero Burning Rom(e) (www.ahead.de)
> with following settings:
> *Bootable cdrom
> *No-emulation
> *x:\isolinux\isolinux.bin
> *bootsector count 4
> *segment 07C0 for starting.
> 
> Maybe I miss some information?
 >

You can't.  You need to use mkisofs, which has the capability of 
recording some information that is missing from the El Torito standard 
into the boot file.

	-hpa

[Repost because spamcop didn't like my first posting ...]
Hi,

"H. Peter Anvin" <hpa at zytor.com> schrieb am
20.05.02:
> BBL blue wrote:
> > 
> > As authoring program I used Ahead Nero Burning Rom(e) (www.ahead.de)
> > with following settings:
> > *Bootable cdrom
> > *No-emulation
> > *x:\isolinux\isolinux.bin
> > *bootsector count 4
> > *segment 07C0 for starting.
> > 
> > Maybe I miss some information?
>  >
> 
> You can't.  You need to use mkisofs, which has the capability of 
> recording some information that is missing from the El Torito standard 
> into the boot file.
BTW, mkisofs is available for windows. I didn't try to create
isolinux-based CDs on windows, but this should work. You can burn
mkisofs-generated isos with Nero, or with cdrecord. It's available here:
ftp://ftp.fokus.gmd.de/pub/unix/cdrecord/alpha/win32

Regards,

Josef



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