Rails Installer - How to update just ruby from 1.9.x to 2.0 +?

Question

I installed with railsinstaller with Ruby version 1.9.3

Can I simply change my Gemfile to specify a different version of Ruby, or does updating Ruby not work like gems? I don't want to break anything during my fiddling.

I wish to avoid:

1) having to reinstall railsinstaller alpha with 2.0.0

2) downloading a separate package like RVM

3) having to do backup operations with files, databases, etc.

Gem updates can bypass all 3 obstacles very easily. Is this also possible with Ruby itself?

Answer 1

It is recommended you use RVM. Then you can switch between Ruby versions. You will still have to tell the Gemfile to use ruby '2.0.0'