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Re: Re: [Qemu-devel] kqemu 0.6.2 and XP


From: Ben Taylor
Subject: Re: Re: [Qemu-devel] kqemu 0.6.2 and XP
Date: Sat, 16 Apr 2005 9:03:37 -0400

Michael Hoeller <address@hidden> wrote:

> Hello Ben,
> 
> I compiled with kqemu support - the version which works is the with or
> without kqemu?

Both.

> Just to double check, I created the virtual partition with dd of=win.img
> bs=1024 seek=2000000 count=0

I forgot one very important part.  The calculation needs
to be <img size in bytes> / (heads * sectors per cylinder 
* 512 bytes) = cylinders. so in your case, the calculation is close

> I am not sure to calculate the cylinders 2 000 000 / 16 / 63 = 1984,126
> ???

well, the default sector size is 512, and you've done
your sizing in number of 1k blocks, your calculations was
close.  It should be:

  blocks     secs/block      hds     sec/cyl

(2 000 000   *   2 )    /  (   16   *   63 ) = 3968

The first time I did the math, my 2g partition went
to 8g partition when I used the -hdachs parameters
cause I really screwed up the math.  (it appears if
you mess your c-h-s values, your image since may
change. :-)

HTH, and sorry for the confusion.

Ben
> 
> Thanks a lot
> Michael
> 
> Michael Hoeller <address@hidden>
> >
> > I have compiled qemu from the cvs 2004-04-14 and kqemu. Then tried to
> > install WinXP it hangs everytime after formating when it tries to copy
> the
> > install data.
> > I have startet with qemu  -m 512 -localtime -user-net -hda
> /data/winxp.img
> > -cdrom /dev/cdrom -k de -boot d
> > Did I missed a tricky option or is there prob?
> 
> How big is your virtual partition supposed to be? Take
> that value, divide by 16 and 63 and then add
> -hdachs <cylinder>,16,63 and see if that works. I'm
> not using anything special (other than stuff to make
> it work with Solaris), and I've gotten win98, win2k pro,
> win2k server, winxp home upgrade and win 2003 to
> install.  They don't always run right once I start
> mucking with them, but the great thing is you can
> keep a backup of the image in case you screw something
> up.
> 
> This has worked for me with the cvs code, and not
> including the patch that was posted today.
> 
> 
> Ben
> 
> 
> 
> 
> 
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