Date: Thu, 28 Jul 2005 10:39:06 +0000 From: Bryan Maynard <bryan.maynard@reallm.com> To: freebsd-questions@freebsd.org Subject: Re: Backup kernel - confirmation Message-ID: <200507281039.06997.bryan.maynard@reallm.com> In-Reply-To: <42E8E749.10904@meijome.net> References: <42E8E749.10904@meijome.net>
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On Thursday 28 July 2005 02:10 pm, Norberto Meijome wrote: > quick question - I have a remote box with SMP/HTT disabled, but I'd > like to see how it works with it. If I make a copy of my current > kernel to /kernel_orig, I should be able to install the SMP one as > /kernel, and if hell breaks lose, I should be able to point it to > /kernel_orig ... right? Yes, you can do that. Also of note is that when FreeBSD compiles a kernel it takes the old kernel and renames it kernel.old. When FreeBSD is booting you can select which kernel to use simpy by entering "boot /boot/kernel.old/kernel" or "boot /boot/kernel_orig/kernel". I did this when I was tweak the kernel in my laptop. Check the boot man page for more info. > any caveats for this? ( I do off-band access to the server) Booting using "boot /boot/kernel.old/kernel" runs as if you were booting using your current kernel. I ran my laptop all day on my old kernel and did't see any problems. > thanks in advance, > Beto Thanks, Bryan -- Open Source: by the people, for the people.
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