Backup grub?

[foof]

I have a dual boot system with Kubuntu as default and a Windows XP partition.
Now I want to have a CD I can put in the drive and make it boot Windows XP as default.

How can I backup my grub boot to a CD so it works exactly as the normal boot, but defaults to Win XP instead?

Please help!
Thanks!
/Andreas

[skoal]

Re: Backup grub?

If you just want Grub to boot by default to Windows XP instead, change this line in /boot/grub/menu/lst:

default         0

to 2 (most likely) or whatever number it appears in your list.

[foof]

Re: Backup grub?

I know, but I wanted to boot from CD and make it boot Windows on the harddisk.
I solved it yesterday, I did like it says here:
http://www.gnu.org/software/grub/man...le-CD-ROM.html

The only thing I did different was that the stage2 file is in another place... use locate to find it
and then I edited my menu.lst file to point to the windows boot like:
(in my case Windows is boot option number 6)

default  6

Then I also had to edit it like this:

# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/hda1
title		Microsoft Windows XP Professional
root		(hd0,0)
# savedefault
makeactive
chainloader	+1
boot

I added boot and put # in front of savedefault, don't know why I had to do this to make it
work, but I didn't care either, now it works.

[skoal]

Re: Backup grub?

oops! I kinda figured you wanted to do something more elaborate.  I kinda thought you wanted to do something similar to what I've done in the past (for a bootable grub on a mountable medium, like a floppy).

I've never done it on CD before, but in case anyone wants to know how to put it on a floppy (like you did on a CD), I'll post that howto here as well.  This is how I've always done it...

Insert a floppy, and format it:

skoal@morpheus://~ $ fdformat /dev/fd0
Double-sided, 80 tracks, 18 sec/track. Total capacity 1440 kB.
Formatting ... done
Verifying ... done

drop a filesystem on it:

skoal@morpheus://~ $ mke2fs /dev/fd0 
mke2fs 1.38 (30-Jun-2005)
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
[...]
Writing inode tables: done                            
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 33 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.

create the Grub boot floppy:

skoal@morpheus://~ $ sudo mount -t ext2 /dev/fd0 /media/floppy
Password:
skoal@morpheus://~ $ grub-install --root-directory=/media/floppy '(fd0)'
Probing devices to guess BIOS drives. This may take a long time.
Due to a bug in xfs_freeze, the following command might produce a segmentation
[...]
Installation finished. No error reported.
This is the contents of the device map /media/floppy/boot/grub/device.map.
Check if this is correct or not. If any of the lines is incorrect,
fix it and re-run the script `grub-install'.

(fd0)   /dev/fd0
skoal@morpheus://~ $ cp /boot/grub/menu.lst /media/floppy/boot/grub/
skoal@morpheus://~ $ sudo umount /media/floppy

It's great to have something like this around, especially if you dual boot with XP and your MBR gets blown away after an install or an apartment fire.