On 15.09.2011 23:59, Emmanuel Kasper wrote: > Hello > > I found out that altough GRUB supports a rich set of options for the > kfreebsd and knetbsd commands, the GRUB manual was lacking reference on > how to use them. I propose the following text to be added in the section > 4.2 Some caveats on OS-specific issues. > > Plus I noticed a FIXME in 4.1.1 How to boot an OS directly with GRUB so > I propose an addition for that part (see at end ) > > I tried to work the FreeBSD part in a OS-agnotic way, so it can apply to > FreeBSD and GNU/kFreeBSD > > If this text looks fine, I can re-send in the form of an info patch ( > did not want to learn yet another markup language before getting > feedback ... ) > > I used the following thread to get the needed information before > verifying on my NetBSD and GNU/kFreeBSD machines: > http://forums.freebsd.org/showthread.php?t=5918 > > Manu > > > > > > FreeBSD > GRUB can boot a FreeBSD kernel by using > the 'kfreebsd' command. The procedure would look like this: > > 1. Set the partition where resides the FreeBSD kernel: > > 'set root=(hd0,1,a)' > you use the device notation from an old version. This is not supported anymore. Also it's recommended to use UUIDs > 2. Load the kernel > > 'kfreebsd /boot/kernel/kernel' > > 3. Load the kernel boot information > > 'kfreebsd_loadenv /boot/device.hints' > > 4. Set the root devicepath > 'set kFreeBSD.vfs.root.mountfrom=ufs:/dev/ad4s1a' > > 5. Set any filesystem options to pass > vfs.root.mountfrom.options=rw You forget kFreeBSD prefix. > 6. Finally, run the command 'boot' (see boot). > This is for shell. Explaining how to create a menuentry is more useful > If you want to use the FreeBSD /boot/loader third-stage bootstrap > program, you > would can do the following: > > 1. Set the partition where resides the /boot/loader program: > > 'set root=(hd0,1,a)' > > 2. Load /boot/loader > 'kfreebsd /boot/kernel/kernel' > > 3. Finally, run the command 'boot' (see boot) > I wouldn't recommend this. It's mostly chainloading. > The list of all available options for the 'kfreebsd' command can be seen by > running 'kfreebsd --help' from the GRUB prompt. > > > > > > > NetBSD > GRUB can boot a NetBSD kernel by using the 'knetbsd' command. Procedure > is as > follows: > > 1. Set the partition where resides the NetBSD kernel. If NetBSD is installed > on the first partition of your first hard disk, you would need: > > 'set root=(hd0,1,a)' > > 2. Load the kernel and specify the root devicepath: > > 'knetbsd /netbsd --root=wd0a' > > 3. Finally, run the command 'boot' ( see boot) > > The list of all available options for the 'kfreebsd' command can be seen by > running 'kfreebsd --help' from the GRUB prompt. > > > > > > > > Multiboot (addition to 4.1.1 ) > Booting a multiboot compliant kernel, requires loading the kernel with the > 'multiboot' command, and then executing it with the 'boot' command. > An example of very simple but fully compliant kernel, is the Grub > Invaders game, > which you can start this way: > > 1. Load Grub Invaders with the command 'multiboot' > > 'multiboot /boot/invaders.exe' > There is no reason to add .exe here. > 2. Run the command 'boot' ( see boot) > > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > https://lists.gnu.org/mailman/listinfo/grub-devel >
-- Regards Vladimir 'φ-coder/phcoder' Serbinenko
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