Re: Where to view bootup info ? dmesg ??
On Thursday 05 December 2002 17:33, Ben Hartshorne wrote:
> On Wed, Dec 04, 2002 at 11:09:53PM +0100, Sebastiaan wrote:
> > High,
> >
> > On Wed, 4 Dec 2002, daves debian wrote:
> > > Can anyone tell me how to view the bootup screen, it goes by so fast
> > > ....
> > >
> > > I can use dmesg to view the kernel boot
> > > I seem to have loads of error messages after the kernel boots
> > > I have checked /var/log/... no go
> > >
> > > Somewhere about when fstab is mounted
> > >
> > > any ideas ?
> >
> > This should be in /var/log/syslog, /var/log/daemon.log,
> > /var/log/kern.log.
>
> I'd just like to reiterate something said above.
> The boot process can be devided into two sections, kernel boot and
> service boot. All the kernel messages from the kernel boot go into
> /var/log/dmesg (written from the S55bootmisc.sh in rcS.d).
> The services start to boot when you see all the
> Starting sshd.... [ok]
> lines go across the screen. It's up to each service to log stuff if
> they want to; there's no centralized logging service for those. So, if
> one of them is bugging out on you, it's hard to find it logged (unless
> it's a nice and kind service).
>
> This boundary is a little fuzzy when it comes to services that load
> kernel modules, such as starting network services. Part of that (the
> part that has to do with the kernel) gets logged in /var/log/dmesg, but
> there might be other parts that don't.
>
> One technique I have used to be able to read boot messages takes
> advantage of the scrollback buffer in the console. Boot to runlevel 3
> (multiuser, no X) by editing /etc/inittab and changing
>
> >>> # The default runlevel.
> >>> id:5:initdefault:
>
> to
>
> >>> # The default runlevel.
> >>> id:3:initdefault:
>
> When you are getting near the end of the boot process, hit <return> a
> bunch of times. When you get your console login prompt, it clears
> whatever is currently on the screen, hitting <return> pushes stuff off
> the screen so it won't be cleared. (sorry, that's redhat, I think. I
> just checked and it seems the login prompt just comes at the end of the
> boot sequence. much nicer. Yay Debian!)
> You can then scroll back to see what went through the boot sequence (to
> a point, I don't know what it is...) by holding down Shift and pressing
> the PgUp key.
> Don't switch virtual consoles, or you will lose your scrollback buffer.
>
> -ben
many thanks, run init default to 1, works a treat !!
sorts my problem !!
dave
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