Slackware: GRUB2

Depois de instalado o GRUB2, remova o lilo do MBR por meio do comando:

lilo -u /dev/sda

Ou por meio do comando:

dd if=/dev/zero of=/dev/sda bs=440 count=1

Grave o GRUB2 na MBR:

grub-install /dev/sda

Gere o arquivo de configuração do GRUB2:

grub-mkconfig -o /boot/grub/grub.cfg

Exemplo de grub.cfg:

...
menuentry "GNU/Linux, with Linux 2.6.33-smp" --class gnu-linux --class gnu --class os {
set root='(hd0,3)'
search --no-floppy --fs-uuid --set c0c4a270-18d8-4371-b303-3407c25bfd5b
echo Loading Linux 2.6.33-smp ...
linux /boot/vmlinuz root=/dev/sda3 ro
initrd /boot/vmlinuz
}
menuentry "GNU/Linux, with Linux 2.6.33-smp (recovery mode)" --class gnu-linux --class gnu --class os {
set root='(hd0,3)'
search --no-floppy --fs-uuid --set c0c4a270-18d8-4371-b303-3407c25bfd5b
echo Loading Linux 2.6.33-smp ...
linux /boot/vmlinuz root=/dev/sda3 ro single
initrd /boot/vmlinuz
}
menuentry "Windows XP" {
set root=(hd0,2)
chainloader +1
}