[Qemu-devel] boot a preinstalled winxp on linux/x86: writing a patch...

[Qemu-devel] boot a preinstalled winxp on linux/x86: writing a patch...

[Roberto Polli]

hi all,

I tried to boot my preinstalled winxp with
 # qemu -boot c -hda /dev/hda

that's what happens:
- qemu load grub, and I select to boot winxp (grub says "chainloader +1, then 
boot")
- qemu starts to load winxp, with a winxp boot screen
- qemu fails and reboots

it seems qemu stops loading winxp when /dev/hda "ends" and /dev/hda1 starts.

I could build a patch to fix it, but before start studing qemu source, I'd 
like to ear from you - yes, if it was easy you guru already would have done 
it!

tia,
R.
-- 

Roberto Polli
Babel S.r.l. - http://www.babel.it
Tel. +39.06.91801075 - fax +39.06.91612446
P.zza S.Benedetto da Norcia, 33 - 00040 Pomezia (Roma)

Re: [Qemu-devel] boot a preinstalled winxp on linux/x86: writing a patch...

[Stefan Weil]

Hi,

booting a preinstalled winxp fails because Windows XP
crashs (sometimes you will see a bluescreen) and starts
a reboot. It won't fail if the real hardware and
QEMU's virtual hardware are nearly identical.
Especially the chipset seams to be critical.

/dev/hda1 is the first partition which is part of
/dev/hda (whole disk), so there are no patches which
can fix anything in QEMU here.

You might extend QEMU to emulate your computer's
hardware - then XP would run. But this is a lot of work...

Regards
Stefan


Roberto Polli schrieb:
> hi all,
>
> I tried to boot my preinstalled winxp with
> # qemu -boot c -hda /dev/hda
>
> that's what happens:
> - qemu load grub, and I select to boot winxp (grub says "chainloader
> +1, then
> boot")
> - qemu starts to load winxp, with a winxp boot screen
> - qemu fails and reboots
>
> it seems qemu stops loading winxp when /dev/hda "ends" and /dev/hda1
> starts.
>
> I could build a patch to fix it, but before start studing qemu source,
> I'd
> like to ear from you - yes, if it was easy you guru already would have
> done
> it!
>
> tia,
> R.

Re: [Qemu-devel] boot a preinstalled winxp on linux/x86: writing a patch...

[Roberto Polli]

Hi

Alle 11:09, giovedì 28 dicembre 2006, Stefan Weil ha scritto:
> booting a preinstalled winxp fails because Windows XP
> crashs...and ... reboot. It won't fail if the real hardware and
> QEMU's virtual hardware are nearly identical.
ok

> Especially the chipset seams to be critical.
1- so we should have one qemu "chipset emulator" for each winxp installation?
2- is this pbm equivalent to the "move my hd to another pc with different 
mainboard" one?
3- if I solve pbm 2, should I solve pbm 1?


> /dev/hda1 is the first partition which is part of
> /dev/hda (whole disk)
yes, i mistakenly thought that part of the windows bootloader was related to 
the mbr

Thank you very much for your explanation, these are very helpful! Do you think 
I should put something about this thread in the wiki? Forums are full of such 
these question!

Greetings,
R.
-- 

Roberto Polli
Babel S.r.l. - http://www.babel.it
Tel. +39.06.91801075 - fax +39.06.91612446
P.zza S.Benedetto da Norcia, 33 - 00040 Pomezia (Roma)

Re: [Qemu-devel] boot a preinstalled winxp on linux/x86: writing a patch...

[Stefan Weil]

Roberto Polli schrieb:
>> Especially the chipset seams to be critical.
> 1- so we should have one qemu "chipset emulator" for each winxp
> installation?
> 2- is this pbm equivalent to the "move my hd to another pc with different
> mainboard" one?
> 3- if I solve pbm 2, should I solve pbm 1?
>
1- Yes, more chipset emulations would help.
2- Yes.
3- Yes, at least I think so.

Regards
Stefan

Re: [Qemu-devel] boot a preinstalled winxp on linux/x86: writing a patch...

[Ottavio Caruso]

--- Roberto Polli <rpolli@babel.it> wrote:

> hi all,
> 
> I tried to boot my preinstalled winxp with
>  # qemu -boot c -hda /dev/hda
> 
> that's what happens:
> - qemu load grub, and I select to boot winxp (grub says
> "chainloader +1, then 
> boot")
> - qemu starts to load winxp, with a winxp boot screen
> - qemu fails and reboots

Ciao Roberto,

this has been discussed before on the user forum, too.
In the meantime, maybe this is not exactly waht you're looking for
but, have you tried Bart PE:
http://www.nu2.nu/pebuilder/   
?



-- 
Ottavio Caruso

I will not purchase any computing equipment from manufacturers that recommend Windows Vista™ or any other Microsoft® products.
http://www.pledgebank.com/boycottvista

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Re: [Qemu-devel] boot a preinstalled winxp on linux/x86: writing a patch...

[Dirk Behme]

Roberto Polli wrote:
> Alle 11:09, giovedì 28 dicembre 2006, Stefan Weil ha scritto:
> 
>>booting a preinstalled winxp fails because Windows XP
>>crashs...and ... reboot. It won't fail if the real hardware and
>>QEMU's virtual hardware are nearly identical.
> 
> ok
> 
>>Especially the chipset seams to be critical.
> 
> 1- so we should have one qemu "chipset emulator" for each winxp installation?
> 2- is this pbm equivalent to the "move my hd to another pc with different 
> mainboard" one?
> 3- if I solve pbm 2, should I solve pbm 1?
> 
>>/dev/hda1 is the first partition which is part of
>>/dev/hda (whole disk)
> 
> yes, i mistakenly thought that part of the windows bootloader was related to 
> the mbr
> 
> Thank you very much for your explanation, these are very helpful! Do you think 
> I should put something about this thread in the wiki? Forums are full of such 
> these question!

I think parts of this are already in Wiki:

http://kidsquid.com/cgi-bin/moin.cgi/FrequentlyAskedQuestions#head-a1fc78523d7c7d256a29bac4577cd728be70eedd

Do you think this is sufficent? If not, feel free to extend it.

Dirk

Re: [Qemu-devel] boot a preinstalled winxp on linux/x86: writing a patch...

[Roberto Polli]

Alle 07:48, sabato 30 dicembre 2006, Dirk Behme ha scritto:
> I think parts of this are already in Wiki:
> 
http://kidsquid.com/cgi-bin/moin.cgi/FrequentlyAskedQuestions#head-a1fc78523d7c7d256a29bac4577cd728be70eedd
interesting enough but still not working - yes, my win skill are not 
excellent.

> Do you think this is sufficent? If not, feel free to extend it.
 I'll let you know it something goes well!

Thank you again to everybody!
R.
-- 

Roberto Polli
Babel S.r.l. - http://www.babel.it
Tel. +39.06.91801075 - fax +39.06.91612446
P.zza S.Benedetto da Norcia, 33 - 00040 Pomezia (Roma)