On Feb 20, 2003, [EMAIL PROTECTED] wrote:
> I'm tracking 4.7 stable.
> The handbook asks me to:
> go to single user mode and fsck -p (etc ...)
> Can't.  
> "/dev/ad2s1a: NO WRITE ACCESS
> (Mounted RW  according to fstab).
> after "make buildworld" as single user and reboot also to single user could not
> "cd /usr/src" - ls shows the /usr directory containing only /usr/local and no
> other directories.
> I CAN find /usr/src (and a number of other useful directories <g>) as root or user.
> I am next supposed to "make buildkernel # make installkernel".  This appeared to
> work ok (I didn't monitor), but no new kernel appeared in the / directory (I
> still had my 'old' one).
> The next step was to be "make installworld" but I have not done this in view of
> the earlier errors.
> Can someone figure this out for me and point me in the right direction?
> Thanks.
> --
> Brian

As of /usr/src/UPDATING:

        To update from 4.0-RELEASE or later to the most current
        make buildworld
        make buildkernel KERNCONF=YOUR_KERNEL_HERE
        make installkernel KERNCONF=YOUR_KERNEL_HERE
        reboot  (in single user) [1]
        make installworld
        mergemaster             [2]

In single user mode only the root fs is mounted by default. So for making installworld 
you have to mount all the slices affected by such a process (usually all other slices 
/usr, /var), and also, only the system itself boots up, nothing else is started 
preventing any problem caused by installing something new under a running old task 
in memory. If the new kernel fails you can return to the old one without risking 
incompatibility with the old kernel and the new world. Everything in this order has a 
reason :). 


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