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## <a name="Hurd_on_QEMU"> </a> Hurd on QEMU
I will assume you have already installed [[QEMU]].
You will need the [debian grub boot disk package](ftp://ftp.debian.org/debian/pool/main/g/grub/grub-disk_0.95+cvs20040624-17_all.deb) for the floppy.img . The floppy boot image is called grub-0.95-i386-pc.ext2fs.gz and you can [[Gunzip]] this and rename it to floppy.img if you like.
First off use `qemu-img` to create a disk image. I set mine to 2 gigabytes.
# qemu-img create hd0.img 2G
Now you will need a cdrom image or an install CD. I will use Debian/Hurd K9 in this example. I use a floppy image with [[GRUB]] on it to boot the system after I'm done installing. The first time you run it you'll want to use `-boot d` to boot off the cdrom.
# qemu -hda hd0.img -cdrom debian-K9-hurd-i386-CD1.iso -fda floppy.img -boot d
Now at his point do the regular install using `hd0` as your harddrive. Partition it and install the base system. Instead of rebooting, just stop QEMU (it'll keep booting off the cdrom).
**Important:** Current versions of gnumach will not boot in QEMU unless you use QEMU's `-isa` command line option (`-M isapc` for QEMU 0.8). A patch to fix this is in the works.
Now run your image with floppy booting and finish the install (`./native-install` .. etc)
# qemu -isa -hda hd0.img -cdrom debian-K9-hurd-i386-CD1.iso -fda floppy.img -boot a
So far I haven't been able to get networking going, it seems as if gnumach is not finding the ethernet device, although I haven't really looked into it that far.
### <a name="Mounting_disk_image"> Mounting disk image </a>
If you want to mount your disk image, you'll either have to use mount or a program called [[Lomount]] to do this. If you are going to use mount, you will need to know the correct offset.
# mount -o loop,offset=OFFSET hd0.img /mnt/diskimage
-- [[Main/AndrewResch]] - 23 Feb 2005
Readers may be interested in [[Hurd/QemuImageForL4]] too.
-- [[Main/OgnyanKulev]] - 23 Feb 2005
To find the offset, you can run (from your host OS):
$ fdisk -ul hd0.img
and multiply sectors by the # of bytes given
-- [[Main/EldonKoyle]] - 25 Aug 2005
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