Happy Grub 2 and Lucid user.

I made these simple changes to my Lucid Grub 2 bootloader and am now a very happy Ubuntu dual booter. i mainly wanted to see the splash image I had for Karmic plus a descriptive boot menu entry. This is of course not possible when using the OS prober, which I disabled for good measure. Bootable rescue CD works fine as usual.
(..Karmic is on my second SATA drive i.e. sdb with Grub installed to / partition boot sector, hence (hd1,1) ....)

Changes made to Lucid (17-5-2010)

In /etc/grub.d 40_custom added:


echo "Adding custom boot entry(s)" >&2 (Edit: Not needed)
cat << EOF
menuentry "Ubuntu Karmic 9.10" {
set root=(hd1,1)
chainloader +1
}
EOF

***************************************************************************

Add to etc/default/grub

GRUB_DISABLE_OS_PROBER=true (under GRUB_COMMANDLINE_LINUX="")

and.. (Edit: If you have this situation:- Bootup/Plymouth.
Users should experience a much faster boot however some users may experience problems with Plymouth after the nVidia graphics driver has been enabled. Users may experience plymouth using lower graphics resolution.)

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480
GRUB_GFXPAYLOAD_LINUX=1440x900 ****

Save the file and run sudo update-grub


**** I added this line. (Should be your monitors native resolution)


For Windows/Ubuntu dual booters this seems to be the way to go nowadays:-

http://sourceforge.net/apps/mediawiki/bootinfoscript/index.php?title=Boot_Problems:Boot_Sector