Swap slice length probs on install

[Richard Yates SPG]

We labelled up a / disk for later encapsulation. It was
a 1.05GB drive, with s0 for root, and a two-cylinder s1
for swap, as this gives the size needed for the private
region for this disk (2.1GB and above only need one
cylinder).

This turned out to be a mistake, as on reboot after the
encapsulation something complained about a zero length
swap slice, and the #### thing came up 1gle-user. I was
not there when this went on, so perhaps a quick hack in
the vfstab and a format and label might've fixed it.

Any ideas what was happening?

The workaround was to allow 3 cylinders for swap, then
things were OK, but this is messy - we were left with a
disk label with a one-cylinder swap (later disposed of).
Swap was always going to be on a different device.

Richard.
--