Displaying 4 results from an estimated 4 matches for "isodavid".
2017 Mar 24
0
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
...ux
David Christensen reports that my latest isohdpfd.bin reported
C, thus it failed early (carry set) in finding an EBIOS.
My interpretation is that it must corrupt CX so isolinux is fooled into
trying EBIOS first.
So, again David, can you please try this one:
<http://www.ludd.ltu.se/~ams/tmp/isodavid.tgz>
To keep your (our?) spirits up I've named it of you.
It won't boot anything, but it will:
* Hacked special David version. Won't boot anything.
*
* Will print the result of INT 0x13, AH=0x41:
*
* <CARRY>
* AX
* BX
* CX
* DX
* I die now.
*
* where <CARRY>...
2017 Mar 23
6
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
Hi,
Geert Stappers wrote:
> Contact David off-list, he did unsubscribe.
Can you tell when he unsubscribed (i.e. which of the messages he got
as last one) ?
> Martin posted elsewhere in this thread "Thomas, you found the bug"
> and provided a patch.
Open question is whether the fix helps with David's BIOS.
The newest answer from Martin indicates that a failure to read
2017 Mar 25
1
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
...dd.ltu.se/~ams/tmp/isohdpfx.bin.170324
The source patch is at the second half of
http://www.syslinux.org/archives/2017-March/025706.html
---------------------------------------------------------------------
Details:
Martin Str|mberg wrote:
> > > <http://www.ludd.ltu.se/~ams/tmp/isodavid.tgz>
> > > * <CARRY>
> > > * AX
> > > * BX
> > > * CX
> > > * DX
> > > * I die now.
i wrote:
> > I place my bet on CX value 4. :))
David Christensen wrote:
> No carry.
> 3000
> AA55
> 0004
> 0080
> I die now
H...
2017 Mar 24
3
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
On Fri, Mar 24, 2017 at 05:38:31PM +0100, Thomas Schmitt via Syslinux wrote:
> isohdpfc pushes the CX value to the stack which it gets from INT 13 AH 41.
> Quite surely bit 0 of that CX is not set. But bit 2 "Enhanced Disk Drive"
> could be set.
> https://en.wikipedia.org/wiki/INT_13H
>
> I understand on David's BIOS after
>
> andw $1,%cx