"Andreas Schulze" <b79xan@gmx.de> wrote in message
news:bunsn2$9ml9@news-1.bank.dresdner.net...
> "Patrick" <rhodan_nospam_5625@freenet.de> schrieb im Newsbeitrag
> news:bumrc1$v0f$1@online.de...
> > Hi there,
> >
> > may be a stupid question but sometime's You have no ideas at all.
> >
> > The problem is that we plan to upgrade a 6H1 from one to two proc's. Got
> > a new processor board. OS is still 4.3.3. The downtime should be as
> > short as possible. As far as I know the OS won't boot after the upgrade
> > because of the uniprocessor kernel installed. On the other hand, I know
> > no way to install a multiprocessor kernel prior to the upgrade.
> >
> > The only way I worked out for doing the upgrade is to mksysb the machine
> > and resore it afterwards.
> >
> > Does anyone know a way of more elegance?
> >
> > Patrick
>
> Hallo Patrick,
>
> actually it is a good idea to install mp kernel even if you just use one
cpu
> to ease upgrading. Performance differences with single cpu can be
neglected.
> Anyway this is a rather simple task with AIX, you just need to change two
> links from unix to unix_mp before exchanging the board:
> # ln -sf /usr/lib/boot/unix_mp /unix
> # ln -sf /usr/lib/boot/unix_mp /usr/lib/boot/unix
> # bosboot -ad /dev/ipldevice
> # shutdown -r


After making sure you have bos.mp installed...