qemu problem with Win2k

goldfish · 12-09-2005, 06:41 AM

I'm running Gentoo (2.6 kernel), and i've emerge'd qemu with kqemu support. I've managed to create a HDD image using the following command

Code:

dd if=/dev/zero of=hdd.img bs=1024 count=200000

Or something similar. I've got a 2GB hdd.img file, which I booted and installed Windows 2000 SP4 using this:

Code:

qemu -boot d -cdrom /dev/cdrom -hda hdd.img

The Win2k install went perfectly, and it even rebooted into Windows when it was finished. However, now when I try and run:

Code:

qemu hdd.img

I get an error that says "A disk read error occurred". I've checked perms on the hdd.img file, they're fine. I can boot from a CD using the same command as before.

I have found this:
http://lists.gnu.org/archive/html/qe.../msg00017.html
And it says something about a patch NT-BOOT-MAIN. However, I have no idea what to do with this patch. Compile it? Run it? Copy it somewhere?

Can anyone shed some light on this?

madluther · 12-09-2005, 07:54 AM

qemu has its own image creation tool, for a 2G image use the command line

Code:

qemu-img create -f raw hdd.img 2G

The difference between dd image and the qemu created image is the qemu image is a drive image, it has a boot sector, partition table etc.

HTH

Mad.

goldfish · 12-10-2005, 05:42 AM

Quote:

Originally Posted by madluther

qemu has its own image creation tool, for a 2G image use the command line

Code:

qemu-img create -f raw hdd.img 2G

The difference between dd image and the qemu created image is the qemu image is a drive image, it has a boot sector, partition table etc.

HTH

Mad.

Thanks, that's perfect!

I've got another qemu related question: How do you change the "resolution"... if you do it in the guest operating system (in my case WXP), the display drivers can't seem to take it properly. I'm getting weird graphical problems. When I fullscreen it (which I have yet to work out how to do), I want it to be at the same res as my X desktop.

madluther · 12-10-2005, 09:02 AM

I have had the same problem with resolution changes, rebooting the guest win2k system fixes it.

BTW, CTRL+ALT+f will toggle fullscreen.

HTH

Mad

goldfish · 12-10-2005, 01:32 PM

Cheers.

Unfortunately, this has come back at me. I made the image properly, and it all looked good, but when I come to booting from hard drive like this:

Code:

qemu hdd.img

I get the
A disk read error occurred
Error thrown.

This is with WinXP now, rather than 2k.

madluther · 12-10-2005, 02:43 PM

Just a guess, but a 2G image might be too small, the smallest image I've ever used (with win2k) is 4G, typically I specify 10G as the actual image size. The actual size of this image is only a bit larger than the files it contains so it doesn't actually use 10G.

HTH

Mad.

goldfish · 12-10-2005, 05:34 PM

Quote:

Originally Posted by madluther

Just a guess, but a 2G image might be too small, the smallest image I've ever used (with win2k) is 4G, typically I specify 10G as the actual image size. The actual size of this image is only a bit larger than the files it contains so it doesn't actually use 10G.

HTH

Mad.

The thing is it does boot perfectly fine after the install - it just doesn't boot properly straight from the image. Besides, when I made my second image I made it 3GB, which should be enough.

Is there any way to "check" the drive image? Maybe even fix it?

madluther · 12-10-2005, 07:29 PM

Are you using the -hda switch when booting ?
ie ..

qemu -hda hdd.img