Thanks for the tip about swap files, I'll have a play with that. There's some
good info on swap partitions and swap files here:
https://www.linux.com/news/all-about-linux-swap-space
"One swap partition can be shared between several GNU/Linux distributions"
That's what I thought too, but I came across some information on the web
(can't find the link now) that said that installing another instance of
GNU/Linux using the same swap partition breaks the ability of the original
instance to use the swap file. Was this person just wrong, or are you saying
that editing /etc/fstab is the solution to this problem? If so, can you
provide more detail (or a link to it) on exactly what to edit in /etc/fstab
and how?