[syslinux] some thinkpad data
H. Peter Anvin
hpa at zytor.com
Wed Jun 11 16:47:14 PDT 2008
Ferenc Wagner wrote:
> Hi Peter,
>
> Here are the details of a problematic ThinkPad model (an R50e):
>
> BIOS version: 2.06 (1WET86WW)
> BIOS date (YYYY-MM-DD): 2005-11-15
> Embedded controller version: 1.04
> System-unit serial number: 1834-S5 GL3-BRGZL
> System board serial number: 1ZB6L5AC1E3
> CPU Type: Intel Celeron M
> CPU Speed: 1.40 GHz
> Installed memory: 512 MB
>
> Booting FreeDOS via current memdisk from an USB HDD (pendrive) fails
> with (approximately, from memory):
>
> - InitDiskERROR in config.sys line
>
> On the other hand, qemu -hda /dev/sda boots FreeDOS via memdisk;
> issuing sys c: there makes the pendrive boot straight into FreeDOS:
>
> - InitDiskWARNING: using suspect partition Pri:1 FS 0e: with
> calculated values 0-0-50 instead of 0-1-1
> C: HD1, Pri[ 1], CHS= 0-0-50, start= 0 MB, size= 1950 MB
>
> The above doesn't really support my theory, but would it be hard or
> possible to add a memdisk option which hides every other drive
> (eg. the pendrive itself) from DOS?
It should be possible... not really sure how much work it would be.
I have a question: if you use an external USB keyboard, does it work
while in Syslinux? Grub? Linux proper? I'm wondering if this is
possibly related to the A20 issue...
-hpa
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