Upgrade FreeBSD 7.1 to 7.2

[Michael Sperber]

Robert Watson <rwatson at FreeBSD.org> writes:

> FWIW, the main problem I ran into with my 8.0 upgrade is that 8.0 uses
> the uart(4) driver for serial ports, and sio(4), 7.2's default, has
> been removed. They require mutually exclusive lines in device.hints
> and different /etc/ttys lines.  If you rely on a serial console, I
> would recommend first switching 7.2 to using uart, pausing for a bit,
> and then switching forward to 8 so that you separate the risks
> associated with changing console drivers from those associated with
> sliding a major kernel version.

Could you briefly elaborate on how that's done with 7.x?  I.e. is
changing device.hints and /etc/ttys enough (what changes?), or do I need
to recompile the kernel?  (I'm a bit confused because both uart and sio
seem to be in GENERIC, but I haven't been able to active uart through
device.hints.  I couldn't find anything on freebsd.org or the internets,
either.)  A few hints would be much appreciated!

-- 
Cheers =8-} Mike
Friede, Völkerverständigung und überhaupt blabla