[syslinux] Buggy bios, boot of dos image hangs with syslinux, but not with isolinux

Zipf Christian zipf.mailcom at boewe-systec.de
Mon Aug 18 00:40:11 PDT 2008


H. Peter Anvin wrote:
> Zipf Christian wrote:
>> H. Peter Anvin wrote:
>>> Zipf Christian wrote:
>>>> I tried Version 3.71, 3.62, 3.55. Unfortunately it is the same
>>>> behavior on all of them. But it is only memdisk that is affected by
>>>> this. If I boot a mini linux distro like DSL or SLAX this works
>>>> just fine from the usb stick. But than again the memdisk code
>>>> works if booted from a cd with isolinux. Mighty strange.
>>>> 
>>> It's actually not all that strange, since it ends up having
>>> different code paths through the BIOS.  Odds are pretty good it is
>>> your USB BIOS which is at fault -- it seems to be one of the really
>>> poor quality control points of BIOSes these days.
>>> 
>>> In fact, it would be really helpful if you posted the debugging
>>> output from 3.71 (it adds a few new pieces of information that
>>> wasn't there in the previous version) from a working (CD-ROM) and a
>>> non-working (USB) session. 
>>> 
> 
> The USB boot output isn't from 3.71.
> 
> 	-hpa
> 
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Sorry forgot to change the memdisk to version 3.71.
Here is the correct one.
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