When the kernel starts to boot, it does not have yet support for any
filesystem. So you have to write to a raw disk partition (whose sector
address is set ahead of time by a means similar to that of LILO), or
allocate a RAM area (immediately after memory test) to serve as a buffer
for kernel messages, for later dumping to file once a R/W filesystem is
available.
I think that dmesg already implements the RAM buffer approach.
--- Omer
On Wed, 22 Jun 2005, Yedidyah Bar-David wrote:
> On Wed, Jun 22, 2005 at 02:49:38PM +0300, Shachar Shemesh wrote:
> > Hi all,
> >
> > I need to direct the kernel messages to a file, instead of going to a
> > tty. I know how to direct it to a serial console, but I want it not
> > displayed on any interactive medium at all.
> >
> > Is it at all possible?
>
> I don't think so.
> Simply disable them (with dmesg or quiet=) and log them with
> klog/syslogd.
> --
> Didi
--- Omer
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