Problem after update to 6.1

[Lowell Gilbert]

Martin Schweizer <lists_freebsd at bluewin.ch> writes:

> Since I updated 5.4R to 6.1R I get the following messages after reboot:
>
> [snip]
> Starting sshd.
> Starting cyrus_imapd.
> Starting sendmail.
> Starting cron.
> Local package initialization: apcupsd.
> Additional TCP options:.
> Starting default moused:.
> Starting inetd.
> Starting background file system checks in 60 seconds.
> /etc/rc: Cannot determine the PREFIX
> Enter full pathname of shell or RETURN for /bin/sh:
> #
>
> ... and I get no login prompt here. What is going wrong?
>
> I did the update like described in /usr/src/UPDATING:
> [snip]
>        To upgrade in-place from 5.x-stable or higher to 6.x-stable
>         -----------------------------------------------------------
>         <make sure you have good level 0 dumps>
>         make buildworld                                 [9]
>         make kernel KERNCONF=YOUR_KERNEL_HERE           [8]
>                                                         [1]
>         <reboot in single user>                         [3]
>         mergemaster -p                                  [5]
>         make installworld
>         make delete-old
>         mergemaster -i                                  [4]
>         <reboot>
> [snip]

My best guess would be a mistake in the mergemaster portion, because I
can't even find the message you're getting.  The system is going into
single-user mode; use that to find the "Cannot determine the PREFIX"
in the rc files, and install the latest version of whatever rc file
that's in.