Update manual NetBSD-wise.

ChangeLog

@@ -1,3 +1,8 @@
+2012-07-31  Grégoire Sutre  <gregoire.sutre@gmail.com>
+
+	* docs/grub.texi: Note that NetBSD/i386 is Multiboot-compliant.
+	(NetBSD): New subsection.
+
 2012-07-22  Ales Nesrsta  <starous@volny.cz>
 
 	* grub-core/bus/usb/ehci.c: PCI iter. - added PCI bus master setting.

docs/grub.texi

@@ -311,8 +311,10 @@ tables are also loaded.
 
 @item Support non-Multiboot kernels
 Support many of the various free 32-bit kernels that lack Multiboot
-compliance (primarily FreeBSD, NetBSD, OpenBSD, and
+compliance (primarily FreeBSD, NetBSD@footnote{The NetBSD/i386 kernel
-Linux). Chain-loading of other boot loaders is also supported.
+is Multiboot-compliant, but lacks support for Multiboot modules.},
+OpenBSD, and Linux). Chain-loading of other boot loaders is also
+supported.
 
 @item Load multiples modules
 Fully support the Multiboot feature of loading multiple modules.
@@ -897,6 +899,7 @@ Here, we describe some caveats on several operating systems.
 @menu
 * GNU/Hurd::
 * GNU/Linux::
+* NetBSD::
 * DOS/Windows::
 @end menu
 
@@ -997,6 +1000,63 @@ the size, run the command @command{uppermem} @emph{before} loading the
 kernel. @xref{uppermem}, for more information.
 
 
+@node NetBSD
+@subsection NetBSD
+
+Booting a NetBSD kernel from GRUB is also relatively easy: first set
+GRUB's root device, then load the kernel and the modules, and finally
+run @command{boot}.
+
+@enumerate
+@item
+Set GRUB's root device to the partition holding the NetBSD root file
+system.  For a disk with a NetBSD disk label, this is usually the first
+partition (a:).  In that case, and assuming that the partition is on the
+first hard disk, set GRUB's root device as follows:
+
+@example
+grub> @kbd{insmod part_bsd}
+grub> @kbd{set root=(hd0,netbsd1)}
+@end example
+
+For a disk with a GUID Partition Table (GPT), and assuming that the
+NetBSD root partition is the third GPT partition, do this:
+
+@example
+grub> @kbd{insmod part_gpt}
+grub> @kbd{set root=(hd0,gpt3)}
+@end example
+
+@item
+Load the kernel using the command @command{knetbsd}:
+
+@example
+grub> @kbd{knetbsd /netbsd}
+@end example
+
+Various options may be given to @command{knetbsd}.  These options are,
+for the most part, the same as in the NetBSD boot loader.  For instance,
+to boot the system in single-user mode and with verbose messages, do
+this:
+
+@example
+grub> @kbd{knetbsd /netbsd -s -v}
+@end example
+
+@item
+If needed, load kernel modules with the command
+@command{knetbsd_module_elf}.  A typical example is the module for the
+root file system:
+
+@example
+grub> @kbd{knetbsd_module_elf /stand/amd64/6.0/modules/ffs/ffs.kmod}
+@end example
+
+@item
+Finally, run the command @command{boot} (@pxref{boot}).
+@end enumerate
+
+
 @node DOS/Windows
 @subsection DOS/Windows