Re: change boot-file doesn't work
Re: change boot-file doesn't work
- Subject: Re: change boot-file doesn't work
- From: John Davidorff Pell <email@hidden>
- Date: Mon, 15 Nov 2004 23:27:31 -0800
You probably know about this, but there is a script available from this
site:
http://opendarwin.org/~jpm/xnu.html
called kswap.sh that may be useful.
Here's the direct link:
http://opendarwin.org/~jpm/naughty/darwin/kswap.sh
JP
On 14 Nov 2004, at 06:54, Gong Michael wrote:
Hi, all,
I successfully built the latest kernel, xnu-517.9.4.
Before actually using it , I need to test whether it
works or not.
From some previous threads, I learn that I can change
boot-file variable to boot the Mac with my built
kernel, but it seems not works.
Here is what I did:
sudo cp <path_to_my_built_kernel>/mach_kernel
/mach_kernel.gcc
sudo nvram boot-device
boot-device hd:,\\:tbxi
sudo nvram boot-file='hd:, mach_kernel.gcc'
sudo reboot
#the system doesn't come up.
reboot the machine, press crt-option-o-f keys,
set-defaults /* this reset the boot-file
varabile back to its default, which is mach_kernel */
reboot the machine, the system comes up.
sudo cp /mach_kernel /mach_kernel_good /*
save the currently working kernel */
sudo cp /mach_kernel.gcc /mach_kernel
/* rename my built kernel with the default name:
mach_kernel */
sudo reboot
#the system comes up, so it proves that my built
kernel is working.
As a conclusion, it looks like only by changing the
boot-file variable name can't boot the system with a
kernel having a different name other than mach_kernel.
I am wondering has anyone successfully booted a system
with a kernel, whose name is not mach_kernel ? If so,
could you please provide some insights ?
Thanks a lot.
Michael
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