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thebigslide
l33t
Joined: 23 Dec 2004
Posts: 792
Location: under a car or on top of a keyboard
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 Posted: Wed Mar 09, 2005 6:28 am Post subject: Howto make a restore DVD |
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Did you finally get your system installed the way you like it?
Now it's time to break your system and you don't want to waste a bunch of time reinstalling?
Got a DVD burner?
If you answered yes to the above 3 questions, this it for you.
** The link to the copybins script used below is here
** You need grub 0.95 or later to boot from CD
| Code: | mkdir /tmp/autoinstaller
##The first thing we need to do is make an image of your system
##shut down X and log into a TTY as root.
##Stop all services except what you need to burn a DVD
##If your filesystem size is less than 4GB (hopefully most of you),
##take out the -j switch from the tar command below as it will only slow you down.
##If your filesystem is 4-5GB, try the -z switch instead of -j.
##I left the verbose option in there because you might want to watch it.
##If it is going to include a bunch of archives or something else you don't want,
##just --exclude it.
##If you have a windows partition (hopefully NTFS), you can back it up too!
df -h
cd /
tar cvjpf /tmp/autoinstaller/stage4.tar.bz2 * --exclude=dev/* --exclude=proc/* \
--exclude=sys/* --exclude=tmp/*
ntfsclone --output - /dev/hda1 | bzip2 -c > /tmp/autoinstaller/ntfs.img.bz2
cd /tmp/autoinstaller
##Copy over the kernel and grub.
##You MIGHT want to recompile the kernel for this.
mkdir boot
cp -a /boot/grub boot/
cp /boot/bzImage boot/
touch boot/initrd
dd if=/dev/zero of=boot/initrd bs=1024 count=4
losetup /dev/loop0 boot/initrd
mke2fs /dev/loop0
mkdir initrd
mount /dev/loop0 initrd
##The initrd needs to contain the files binaries, and device nodes
##needed to format your partitions and extract the tarball.
cd initrd
mkdir bin lib lib/tls
cp /bin/busybox bin/
cp /lib/ld-linux.so.2 lib/
##I'm going to use my copybins script for the sake of simplicity,
##but feel free to just ldd the binaries and copy everything by hand
copybins tar bunzip2 mkreiserfs
##Now we will make the devices that you need
cd dev
mknod /mnt/initrd/dev/console c 5 1
mknod /mnt/initrd/dev/null c 1 3
mknod /mnt/initrd/dev/hda b 3 0
mknod /mnt/initrd/dev/hdb b 3 64
mknod /mnt/initrd/dev/hdc b 22 0
mknod /mnt/initrd/dev/hdd b 22 64
mknod /mnt/initrd/dev/tty c 4 0
mknod /mnt/initrd/dev/loop0 b 7 0
##Please see /usr/src/linux/Documentation/devices.txt for more info
cd ..
##Now we make the script that executes at boot time right after the kernel is done loading.
touch linuxrc
chmod +x linuxrc
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| Code: | ##linuxrc
export PATH=/bin
# Get kernel CMDLINE
/bin/busybox mount -t proc none /proc
CMDLINE=`/bin/busybox cat /proc/cmdline
umount /proc`
# Mount CD device
CDROM=""
for x in hdd hdc;
do
/bin/busybox mount -t iso9660 -r /dev/$x /cdrom # > /dev/null 2>&1
if [ "$?" = "0" ]
then
CDROM="${x}"
break
fi
done
# CD not found
if [ "${CDROM}" = "" ]
then
exec /bin/busybox sh 2>&1
exit
fi
/bin/busybox echo "Reinstall Windows (y/n)?"
read WINYES
/bin/busybox echo "Reinstall Linux (y/n)?"
read LINYES
/bin/busybox mount -t proc none /proc
if [ $LINYES = "y" ]; then
/bin/busybox echo Formatting Linux
/bin/mkreiserfs /dev/hda6 -q
/bin/busybox mount -t reiserfs /dev/hda6 /newroot
/bin/busybox echo Filling Linux Filesystem - Do not interrupt this process...
cd newroot
/bin/tar xjpf /cdrom/stage4.tar.bz2
fi
if [ $WINYES = "y" ]; then
/bin/busybox echo "Formatting C:"
/bin/mkntfs /dev/hda1
/bin/busybox echo Filling Windows Filesystem - Do not interrupt this process...
/bin/bunzip2 -c /cdrom/ntfs.img.bz2 | /bin/dd of=/dev/hda1 bs=8192
/bin/ntfsfix /dev/hda1
fi
/bin/busybox umount /cdrom
exec /bin/busybox chroot / /bin/busybox sh
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The grub.conf should look like this:
| Code: |
title=Gentoo Linux Restore DVD
root (cd)
kernel (cd)/boot/bzImage video=vesafb:ywrap,pmipal,1024x768-24@85 root=/dev/ram0 rw init=/linuxrc
initrd (cd)/boot/initrd
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Now we have all this put together in /tmp/autoinstaller.
Time to burn it to disk
| Code: |
##Make sure this in unmounted first
umount /tmp/autoinstaller/initrd
growisofs -speed=2 -Z /dev/hdc -R -N -J -v -d -dvd-compat -hide-rr-moved \
-no-emul-boot -boot-info-table -b boot/grub/stage2_eltorito \
-boot-load-size 4 -hide boot.catalog -V "Gentoo Restore" \
-A "Gentoo Restore DVD" /tmp/autoinstaller/
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Giver a test.
Here's the contents of my initrd, just for comparison:
| Code: | ls -R
.:
bin cdrom dev etc lib linuxrc lost+found newroot proc usr
./bin:
bunzip2 busybox bzip2 dd mkdosfs mkntfs mkreiserfs ntfsfix tar
./cdrom:
./dev:
console hda hda1 hda4 hda5 hda6 hdb hdc hdd loop0 null tty
./etc:
fstab mtab
./lib:
ld-2.3.4.so ld-linux.so.1.9.11 libdl-2.3.4.so libuuid.so.1 tls
ld-linux.so.1 ld-linux.so.2 libdl.so.2 libuuid.so.1.2
./lib/tls:
libc-2.3.4.so libc.so.6 libpthread-2.3.4.so libpthread.so.0 librt-2.3.4.so librt.so.1
./lost+found:
./newroot:
./proc:
./usr:
lib sbin
./usr/lib:
libntfs.so.5 libntfs.so.5.0.0
./usr/sbin:
ntfsclone
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But I have some things on there for diagnostics purposes that really aren't necessary. |
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Hauser
l33t
Joined: 27 Dec 2003
Posts: 650
Location: 4-dimensional hyperplane
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| Posted: Wed Mar 09, 2005 1:27 pm Post subject: |
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You can also transform a Gentoo LiveCD into a LiveDVD:https://forums.gentoo.org/viewtopic-t-293580-highlight-dvd.html
_________________
AMD Athlon XP 2600+; 512M RAM;
nVidia FX5700LE; Hitachi 120Gb
2.6.9-nitro4, reiser4, linux26-headers+nptl
Do I like to compile everything?
Positive definite! |
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