Re: Hardware requirements
@Snorlax, I was replying to @anthonyhegedus, so "them" here means "the friends who bring their laptops in to me for a mate's once-over", not a POS.
As @defiler suggests above, it's perfectly sensible to run Linux on a POS.
However, your point still stands. You don't just shove Ubuntu and say your prayers. You would run a super-stable distro that is backed by a support contract and a 24x7 service level, which is how companies like Red Hat and Oracle make money from Linux. And it pays them a lot, in fact, it pays them so much that these have become megacorps from paid Linux support.