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><H1
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><A
NAME="GUEST-GNU"
>9.7. GNU (Also known as GNU/Hurd)</A
></H1
><DIV
CLASS="SECTION"
><H2
CLASS="SECTION"
><A
NAME="AEN3774"
>9.7.1. Installing GNU</A
></H2
><P
>This has been contributed by Bruno Bonfils (asyd at debian-fr dot org) </P
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="AEN3777"
>9.7.1.1. Introduction</A
></H3
><P
>Since I don't have enough computers to dedicate a box to GNU, I'm trying
to do my own harddrive image disk. I thougt there was
some documentation about how to do that. But since I didn't find
anything and I decided to write a small doc. I hope this document will be
useful for some people who wants to try the GNU/Hurd.</P
></DIV
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="AEN3780"
>9.7.1.2. The testing box</A
></H3
><P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
>Debian (Sid) GNU/Linux 2.4.19
ii bochs 1.4.1.no.elpin IA-32 (x86) PC emulator
ii bochs-x 1.4.1.no.elpin Bochs binary with X interface.
ii grub 0.92+cvs200209 GRand Unified Bootloader
ii gcc-i386-gnu 1.7-8 Cheap cross-compiler for GNU/Hurd.
ii mig-i386-gnu 1.2-1 The GNU distribution of the Mach 3.0 interface</PRE
></TD
></TR
></TABLE
>
If you don't have time and if you trust me, you can download here
<A
NAME="AEN3784"
HREF="#FTN.AEN3784"
><SPAN
CLASS="footnote"
>[1]</SPAN
></A
>
my own image file. (You don't need to run native-install)</P
></DIV
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="AEN3787"
>9.7.1.3. Creating the image</A
></H3
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>In this example, I use a 112 MB image disk, but I think you
can use any size without some problem.</P
></BLOCKQUOTE
></DIV
><P
>Use createdisk command like this :
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
># createdisk gnu.img 112
Disk Geometry:
C: 227
H: 16
S: 63
Total size: 117153792 bytes</PRE
></TD
></TR
></TABLE
></P
><P
>Note on a paper or on your memory the disk geometry. Then, use the
losetup command to create a loopback on the whole disk.
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
># losetup /dev/loop1 gnu.img</PRE
></TD
></TR
></TABLE
></P
><P
>Now, call fdisk on /dev/loop1. Go into expert mode, and modify the
disk geometry using the c, h, s commands. Return in normal mode, and
create an unique primary partition which uses the whole disk. Then,
detach the /dev/loop1 using :
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
># losetup -d /dev/loop1</PRE
></TD
></TR
></TABLE
></P
></DIV
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="AEN3797"
>9.7.1.4. Installing GNU</A
></H3
><P
></P
><UL
><LI
><P
> Attach the partition</P
><P
>
First of all, you need to create a filesystem on the disk. Use the
command losetup and -o &lt;offset&gt; option to attach /dev/loop1 on the first
partition of an image disk. Offset is computed like this :</P
><P
>
offset = sector * block_size (512)
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
># losetup -o 32256 /dev/loop1 gnu.img</PRE
></TD
></TR
></TABLE
></P
></LI
><LI
><P
> Preparing the filesystem</P
><P
>According to the GNU/Hurd Installation Guide
<A
NAME="AEN3808"
HREF="#FTN.AEN3808"
><SPAN
CLASS="footnote"
>[2]</SPAN
></A
>
, use mke2fs to create a filesystem.
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
># mke2fs -o hurd /dev/loop1</PRE
></TD
></TR
></TABLE
>
Just mount /dev/loop1 like a typical dev.
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
># mount /dev/loop1 /mnt/gnu</PRE
></TD
></TR
></TABLE
></P
></LI
><LI
><P
> Finish the installation</P
><P
>Download a GNU archive as indicated in the Hurd Installation Guide, and decompress it in /mnt/gnu.
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
># cd /mnt/gnu
# tar --same-owner -xvzpf ~/gnu-latest.tar.gz</PRE
></TD
></TR
></TABLE
></P
></LI
></UL
></DIV
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="AEN3817"
>9.7.1.5. Bochs Configuration</A
></H3
><P
>Copy default configuration (<TT
CLASS="REPLACEABLE"
><I
>/usr/share/doc/bochs/examples/bochsrc.gz</I
></TT
> on debian)
on your home directory and edit it with your favorite editor (GNU Emacs, i hope ;).</P
><P
>For my image file I have the following configuration :
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
>romimage: file=/usr/share/bochs/BIOS-bochs-latest
megs: 128
vgaromimage: file=/usr/share/bochs/VGABIOS-lgpl-latest
floppya: 1_44=/dev/fd0, status=ejected
ata0-master: type=disk, path="/home/asyd/travail/hurd/gnu.img", cylinders=227, heads=16, spt=63 # edit me
ata0-slave: type=cdrom, path=/dev/cdrom, status=inserted
boot: disk
log: /dev/stdout
panic: action=ask
error: action=report
info: action=report
debug: action=ignore
vga_update_interval: 300000
keyboard_serial_delay: 250
keyboard_paste_delay: 100000
cpu: ips=1000000
mouse: enabled=0
private_colormap: enabled=0
fullscreen: enabled=0
screenmode: name="sample"
ne2k: ioaddr=0x300, irq=9, mac=fe:fd:00:00:00:01, ethmod=tap, ethdev=tap0
keyboard_mapping: enabled=0, map=
keyboard_type: xt
i440fxsupport: enabled=0</PRE
></TD
></TR
></TABLE
>
note most of them are actually in the default Debian example file. If you use
these lines, don't forget to read the Networking section.</P
></DIV
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="AEN3823"
>9.7.1.6. Note on GNU Mach</A
></H3
><P
>Remember that the Hurd is not a kernel, it's just a collection of libraries
and programs, so we can't actually boot the Hurd. We boot GNU Mach, and
then launch the base servers.</P
><P
>The default GNU Mach which is provided by the default GNU archive
contains some modules / drivers which are not needed in bochs
environment. If you use it, you'll probably have some kernel panic
while booting. Don't be afraid and just say alwayscont.</P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>in my archive, I use a recompiled GNU Mach which contains only the
drivers which are needed (--enable-floppy --enable-ide --enable-kmsg
--enable-ne2000). If you want more informations on how to compile your own
GNU Mach, just send me a mail and I'll add the section in this
document.</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="AEN3829"
>9.7.1.7. Final Step</A
></H3
><P
>Create a grub floppy disk or use my floppy image
<A
NAME="AEN3832"
HREF="#FTN.AEN3832"
><SPAN
CLASS="footnote"
>[3]</SPAN
></A
>
Adapt your bochsrc
file according to your choice. If you want install Grub on the image disk,
remember to copy stage1, stage2 Grub's files into /mnt/gnu/boot/grub.</P
><P
>Launch bochs - as root if you want networking (using sudo for example).</P
><P
>If you have stage1 and stage2 file, you can install Grub on the MBR.
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
>&lt;grub&gt; root (hd0,0)
&lt;grub&gt; setup (hd0)</PRE
></TD
></TR
></TABLE
></P
><P
>Finally, booting GNU mach
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
>&lt;grub&gt; root (hd0,0)
&lt;grub&gt; kernel /boot/gnumach.gz root=hd0s1
&lt;grub&gt; module /boot/serverboot.gz
&lt;grub&gt; boot</PRE
></TD
></TR
></TABLE
>
Now, you can read the official GNU/Hurd Installation Guide
<A
NAME="AEN3839"
HREF="#FTN.AEN3839"
><SPAN
CLASS="footnote"
>[4]</SPAN
></A
>
.</P
></DIV
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="AEN3842"
>9.7.1.8. Networking</A
></H3
><P
>You can try to test networking between the GNU/Linux (host OS) and the GNU/Hurd.
First of all, please read
<A
NAME="AEN3845"
HREF="#FTN.AEN3845"
><SPAN
CLASS="footnote"
>[5]</SPAN
></A
>
, I currently have the *same* problem.
<A
NAME="AEN3848"
HREF="#FTN.AEN3848"
><SPAN
CLASS="footnote"
>[6]</SPAN
></A
></P
><P
>Verify your kernel configuration, you need to have :
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
>CONFIG_NETLINK_DEV=m
CONFIG_ETHERTAP=m</PRE
></TD
></TR
></TABLE
>
(or y instead or m). Check if /dev/tap0 file exist, else create it
with
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
># mknod /dev/tap0 c 36 16</PRE
></TD
></TR
></TABLE
>
and run this command on the guest os :
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
># ifconfig tap0 192.168.100.1 netmask 255.255.255.0</PRE
></TD
></TR
></TABLE
>
Use ip 196.168.100.10 on the GNU/Hurd and you can ping 192.168.100.1</P
></DIV
><DIV
CLASS="SECTION"
><H3
CLASS="SECTION"
><A
NAME="AEN3855"
>9.7.1.9. Thanks</A
></H3
><P
><P
></P
><UL
><LI
><P
> Mmenal</P
></LI
><LI
><P
> #hurdfr, #hurd, #bochs channels (Freenode network)</P
></LI
><LI
><P
> All people who help me everyday on IRC</P
></LI
></UL
></P
><P
> Copyright (c) Bruno Bonfils</P
><P
>Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.1
or any later version published by the Free Software Foundation.</P
></DIV
></DIV
></DIV
><H3
CLASS="FOOTNOTES"
>Notes</H3
><TABLE
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><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="5%"
><A
NAME="FTN.AEN3784"
HREF="guest-gnu.html#AEN3784"
><SPAN
CLASS="footnote"
>[1]</SPAN
></A
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="95%"
><P
><A
HREF="http://plouc.net/~asyd/hurd/hurd.img.gz"
TARGET="_top"
>My own harddisk Image File (~20Mo)</A
></P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="5%"
><A
NAME="FTN.AEN3808"
HREF="guest-gnu.html#AEN3808"
><SPAN
CLASS="footnote"
>[2]</SPAN
></A
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="95%"
><P
><A
HREF="http://web.walfield.org/papers/hurd-installation-guide/english/hurd-install-guide.html"
TARGET="_top"
>GNU/Hurd Installation guide</A
></P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="5%"
><A
NAME="FTN.AEN3832"
HREF="guest-gnu.html#AEN3832"
><SPAN
CLASS="footnote"
>[3]</SPAN
></A
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="95%"
><P
>Grub Floppy image : (coming soon)</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="5%"
><A
NAME="FTN.AEN3839"
HREF="guest-gnu.html#AEN3839"
><SPAN
CLASS="footnote"
>[4]</SPAN
></A
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="95%"
><P
><A
HREF="http://web.walfield.org/papers/hurd-installation-guide/english/hurd-install-guide.html"
TARGET="_top"
>GNU/Hurd Installation guide</A
></P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="5%"
><A
NAME="FTN.AEN3845"
HREF="guest-gnu.html#AEN3845"
><SPAN
CLASS="footnote"
>[5]</SPAN
></A
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="95%"
><P
><A
HREF="http://www.geocrawler.com/archives/3/11758/2002/3/350/8049674/"
TARGET="_top"
>new ethertap interface for linux, by Bryce Denney</A
></P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="5%"
><A
NAME="FTN.AEN3848"
HREF="guest-gnu.html#AEN3848"
><SPAN
CLASS="footnote"
>[6]</SPAN
></A
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
WIDTH="95%"
><P
>This can be solved by using the tuntap interface (see <A
HREF="config-tuntap.html"
>Section 8.10</A
>)</P
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