I have current fresh from src as of today, compiled with HAVE_GCC4=yes.
I have no other C flags set in mk.conf.

the userland installed fine, but I can't boot a kernel. it gets

	mbr_bootsel-> /boot & bootxx_ffsv1 -> kernel

then prints

read Header
pauses, and reboots.

vmware reports some funny popup about doing bad stuff, and re-boots too.

Have I missed some vital stage to do with updating either bootblocks or
the BIOS boot interaction?

-George