How to install GRUB2 on NetBSD
This how-to explains the steps needed to install GRUB2 on an existing i386/AMD64 NetBSD-installation. The steps should work on a properly chroot'ed system too. Tested on NetBSD 6.0 AMD64:
First of all, either download the package, using
pkgin install grub2, or build
it yourself from package sources (
After that, generate a GRUB configuration file, which tells GRUB the positions of the operating system(s). The following command will generate such a file, while adding your NetBSD system into it's list.
# grub-mkconfig -o /grub/grub.cfg
Now, install GRUB into your hard drive's master boot record (MBR).
You have to know it's device name for this step (e.g.
/dev/rwd0a with your desired device name, then change
/dev/rwXXXd to access the raw disk, as in the following example:
Device name : /dev/rwd0a Direct access : /dev/rwd0d
grub-install command for this drive would be:
# grub-install --no-floppy /dev/rwd0d
Hopefully, it should return :
Installation finished. No error reported.
If it does so, simply reboot the system and you should be greeted by a nice
If not, recheck your device names, if that doesn't fix it, search the web for
the error message.
Even though there aren't that much resources about GRUB on NetBSD, you'll
find a lot of information at GNU/Linux-related sites which apply to this
scenario as well.