[Qemu-devel] it works !

[Qemu-devel] it works !

[vaise]

Here is a little trick to allow "already installed" partitions to boot.
(As I said, with only "dd if=/dev/hda of=file.img count=6M" and "qemu 
file.img", bootloaders crash)

1- create and install the partition in "normal mode", ( on hda1 for example )
(do not do the same mistake as me, prepare a linux boot disk before !!!)
make a copy of hda1 under linux, skiping the first 63 blocks :
dd if=/dev/hda of=original.img count=6M skip=63

2- prepare the file "qemu_hd.img" with qemu .fdisk. format it, and install the 
OS too. after the reboot, it should fail, complaining about a memory 
allocation problem. Don't care, shut down.

3- use the option "seek" on the two files :
dd if=original.img of=qemu_hd.img seek=63
(qemu_hd.img must already have been created, as said before)

4- qemu -hda=qemu_hd.img -boot c
Youpi !

notice : harware detection does not work yet.
notice 2 : block size on mandrake 10 is 512, not 1024 !

Re: [Qemu-devel] it works !

[Jean-Michel POURE]

Le jeudi 25 Mars 2004 20:56, vaise@votreservice.com a écrit :
> Here is a little trick to allow "already installed" partitions to boot.

Thanks for the info. I did a normal installation on SuSE 8.2 too and booted in 
Qemu without problem. But it takes a long time. Wouldn't it be easier to 
install GNU/Linux directly in qemu using a CD-ROM installer?

Installers for Mandrake 10, Mandrake 9.x, RedHat 9.x or even Fedora RC-2 are 
derived from a RedHat base. In all cases, installation in text mode fails 
because of CD-ROM recognition problems (see my screenshots on 
http://am.xs4all.nl/phpwiki/index.php/Qemu).

Is there a way of loading the CDROM module manually, with IRQ and hardware 
address (like it is the case for the "ne" network driver)?

Cheers,
Jean-Michel

Re: [Qemu-devel] it works !

[Richard Zidlicky]

On Fri, Mar 26, 2004 at 10:03:08AM +0100, Jean-Michel POURE wrote:
> Le jeudi 25 Mars 2004 20:56, vaise@votreservice.com a écrit :
> > Here is a little trick to allow "already installed" partitions to boot.
> 
> Thanks for the info. I did a normal installation on SuSE 8.2 too and booted in 
> Qemu without problem. But it takes a long time. Wouldn't it be easier to 
> install GNU/Linux directly in qemu using a CD-ROM installer?
> 
> Installers for Mandrake 10, Mandrake 9.x, RedHat 9.x or even Fedora RC-2 are 
> derived from a RedHat base. In all cases, installation in text mode fails 
> because of CD-ROM recognition problems (see my screenshots on 
> http://am.xs4all.nl/phpwiki/index.php/Qemu).
> 
> Is there a way of loading the CDROM module manually, with IRQ and hardware 
> address (like it is the case for the "ne" network driver)?

there are various kernel parameters that might help. From my head I recall
 ideX=base,ctrl,irq
 hdX=ide-cd|ide-scsi
Some docs are directly in the kernel source.

Richard