12.1 GRUB Configuration
The default GRUB configuration is found in
GRUB_DEFAULT=0 GRUB_TIMEOUT_STYLE=hidden GRUB_TIMEOUT=0 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX=""
For changes to take effect:
$ sudo update-grub
To display a menu at boot time:
To add kernel boot time configurations, for example:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash snd_hda_intel.dmic_detect=0"
Documentation is available from GNU. A good guide to multi-boot setup is http://www.tldp.org/HOWTO/Multiboot-with-GRUB.html. This latter resource looks at multi-booting four operating systems although the information is still useful if all you want is to multiboot just two.
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