decoatiAz Ubuntun is megoldható a többféle kernel párhuzamos használata. Telepítsd fel az rt kernelt mindenestül, majd szerkeszd a grub beállító fájlt és kész. Tulajdonképpen én állandó jelleggel az rt-kernelt használom, minden megy vele, talán még jobban is mint a generic kernellel.
A /etc/boot/grub/grub.cfg pl így néz ki nálam:
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="2"
if [ ${prev_saved_entry} ]; then
set saved_entry=${prev_saved_entry}
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z ${boot_once} ]; then
saved_entry=${chosen}
save_env saved_entry
fi
}
function recordfail {
set recordfail=1
if [ -n ${have_grubenv} ]; then if [ -z ${boot_once} ]; then save_env recordfail; fi; fi
}
insmod ext2
set root='(hd0,8)'
search --no-floppy --fs-uuid --set 310a335f-67ec-4e9a-9307-945d2bafa733
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
insmod ext2
set root='(hd0,8)'
search --no-floppy --fs-uuid --set 310a335f-67ec-4e9a-9307-945d2bafa733
set locale_dir=($root)/boot/grub/locale
set lang=hu
insmod gettext
if [ ${recordfail} = 1 ]; then
set timeout=-1
else
set timeout=10
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, Linux 2.6.32-21-generic verzióval' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,8)'
search --no-floppy --fs-uuid --set 310a335f-67ec-4e9a-9307-945d2bafa733
linux /boot/vmlinuz-2.6.32-21-generic root=UUID=310a335f-67ec-4e9a-9307-945d2bafa733 ro splash quiet quiet splash
initrd /boot/initrd.img-2.6.32-21-generic
}
menuentry 'Ubuntu, Linux 2.6.32-21-generic verzióval (helyreállítási mód)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,8)'
search --no-floppy --fs-uuid --set 310a335f-67ec-4e9a-9307-945d2bafa733
echo 'Linux 2.6.32-21-generic betöltése…'
linux /boot/vmlinuz-2.6.32-21-generic root=UUID=310a335f-67ec-4e9a-9307-945d2bafa733 ro single splash quiet
echo 'Kiindulási RAM-lemez betöltése…'
initrd /boot/initrd.img-2.6.32-21-generic
}
menuentry 'Ubuntu, Linux 2.6.31-10-rt verzióval' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,8)'
search --no-floppy --fs-uuid --set 310a335f-67ec-4e9a-9307-945d2bafa733
linux /boot/vmlinuz-2.6.31-10-rt root=UUID=310a335f-67ec-4e9a-9307-945d2bafa733 ro splash quiet quiet splash
initrd /boot/initrd.img-2.6.31-10-rt
}
menuentry 'Ubuntu, Linux 2.6.31-10-rt verzióval (helyreállítási mód)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,8)'
search --no-floppy --fs-uuid --set 310a335f-67ec-4e9a-9307-945d2bafa733
echo 'Linux 2.6.31-10-rt betöltése…'
linux /boot/vmlinuz-2.6.31-10-rt root=UUID=310a335f-67ec-4e9a-9307-945d2bafa733 ro single splash quiet
echo 'Kiindulási RAM-lemez betöltése…'
initrd /boot/initrd.img-2.6.31-10-rt
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod ext2
set root='(hd0,8)'
search --no-floppy --fs-uuid --set 310a335f-67ec-4e9a-9307-945d2bafa733
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod ext2
set root='(hd0,8)'
search --no-floppy --fs-uuid --set 310a335f-67ec-4e9a-9307-945d2bafa733
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
A másik pedig a /etc/default/grub
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
GRUB_DEFAULT=0
#GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX="splash quiet"
# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console
# 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
# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true
# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_LINUX_RECOVERY="true"
# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"
Ezeket kell kicsit megbütykölni és annyi.