Recovering from a late "make installworld" failure?

[Juha Saarinen]

After cvsuping and doing the usual make
buildworld/buildkernel/installkernel, make installworld conked out,
very late in the game by the looks of it. I wasn't able to capture the
error message at the point of failure unfortunately.

Now it's all fun and games with even 'ls' segfaulting and 'make clean'
/ 'make cleanworld' hanging with:

"/usr/src/Makefile", line 91: warning: "/usr/bin/env -i
PATH=/sbin:/bin:/usr/sbin:/usr/bin make  -f /dev/null -V
MAKEOBJDIRPREFIX dummy" returned non-zero status

and no further output.

This message:

http://docs.freebsd.org/cgi/mid.cgi?20031114153630.GA28567

describes a similar situation, and suggests:

"Reboot to single user mode and finish the installworld, 
then boot multiuser and your fine again (hopefully)"

Good advice or not?

-- 

Juha