onsdag 14. juni 2006, 17:19, skrev Falko Trojahn :
> > else {
> > # Non-IDE disk. Should probably sanity-check kernel
> > # geometry against legacy BIOS geometry here. FIXME.
> > }
> > Non-IDE disc systems end up in the commented out else .. :-/
> > (at least this Thinkpad ends up here)
>
> BTW. this is exactly the place (you wrote about this on 12/06/2006)
yep, :-) I was able to pinpoint it more with a machine on my desk.
> Did you read NOTES.txt under "linuxboot" - perhaps this clears
> things a bit up.
ah, there it is, well documented.
My hat off for Pat and the work he put into this project.
> Ok, just some thoughts from me about this:
>
> - may be you could provide the right settings by changing install.pl
> and setting the values e.g. in config.pl, if you know them (240
> heads ...), so that parted uses them. If there is no other way,
> parted can be patched, too, to use the needed values.
I think we have what we need in the environment variables
LEGACY_BIOS_HEAD, LEGACY_BIOS_SECT and $sys_hda
I must get this confirmed..
> - did you prove that it bails out in the else-clause
> " # Non-IDE disk. Should probably sanity-check kernel ..."
Yes, Im shure it ended up inside the else-clause,
I had a print statement there.
> and could you change the install.pl to print out the relevant
> values at this stage? E.g. by
> printf "bios_cyl:%d bios_head:%d bios_sect:%d\n",
> $cylinders, $bios_head, $bios_sect;
> printf "hard drive: $hda sys: $sys_hda\n";
> perhaps other variables, too.
That was the plan, but I did not have enough time on this machine to do it..
..Will try the same on a Thinkpad R52.. ..and a Dell GX620 (noncombination
mode)
> - if it really bails out at this else clause this means, that there
> is no /proc/ide/$sys_hda/settings
> so perhaps only the variable $sys_hda has to be corrected
I dont know much about the scsi system, ...
I was not able to find any
'settings' file for the disk (similar to the IDEs)..
I will see whats inside $sys_hda tomorrow.
> - since you can restart the process any time by starting
> "/etc/master" on commandline, you may change install.pl and don't
> have to reboot any time
Thanks! this is a good one!
> - please try to read/write mount a network drive in this situation
> and do dmesg > dmesg.txt ; lsmod > lsmod.txt ; set > set.txt ;
> ls -lR /proc/ide >procide.txt
> and whatever relevant information you may find
> -> you can send it offlist, perhaps zip-files are not allowed.
Will give it a try!
> - perhaps we could trick parted to use the right heads/sectors by
> using $LEGACY_BIOS_HEAD heads and $LEGACY_BIOS_SECT
yep!! How? .. is the question..
> BTW: did you try e.g.
> dd if=/dev/zero of=/dev/sda count=2000
> and reboot before starting unattended?
No, I believe this is the fix for BIOSes that 'adapt' geometry to whatever is
on disk and has a bad mbr on disk.
Thinkpad T60 did not adapt to report 255 heads, 'Legacy BIOS' still reported
240 heads.
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