[syslinux] [PATCH][git-pull] core/diskstart.inc

H. Peter Anvin hpa at zytor.com
Thu Dec 23 14:00:26 PST 2010

On 12/21/2010 04:54 AM, Gene Cumm wrote:
> Feri: the push/pop around INT 13h I think did the trick.  My Dell
> Latitude E6410 with an unpartitioned UFD (USB Flash Drive) works
> perfectly.  I'm glad that BOCHS also behaved similarly as this would
> have been much harder to nail down otherwise.  This may help out with
> some of those Debian bugs.
> HPA: Could I request a code review and new -pre, at least for the
> push/pop commit (d8cc533), as it fixes the above bug?
> Thinking about it, it makes complete sense.  An unpartitioned HDD is
> essentially a huge superfloppy.  With the device number being an HDD,
> use of the high two cylinder bits would be expected while some other
> INT13h functions might act more like a floppy is present.

It isn't, actually, from a BIOS point of view (partitions are, or at
least *SHOULD BE* irrelevant from the BIOS' standpoint), but it has more
to do with reusing common implementations, which is understandable and
probably a good idea.


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