# Can I play with Rails 3 without destroying my Rails 2 setup?

**URL:** <https://www.ruby-forum.com/t/can-i-play-with-rails-3-without-destroying-my-rails-2-setup/188622>\
**Category:** Rails\
**Created:** [May 14, 2010, 9:23pm UTC](https://www.ruby-forum.com/t/can-i-play-with-rails-3-without-destroying-my-rails-2-setup/188622 "2010-05-14T21:23:21Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![comopasta](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/59ef9b/32.png) [@comopasta](https://www.ruby-forum.com/u/comopasta)\
**Post date:** [May 14, 2010, 9:23pm UTC](https://www.ruby-forum.com/t/can-i-play-with-rails-3-without-destroying-my-rails-2-setup/188622/1 "2010-05-14T21:23:21Z")

</div>

Hi,

I should start playing with Rails 3 but I don’t want to use a different  
machine for that.

I am currently on Rails 2.3.5 and I’m not yet using RVM.  
I know the RVM will help on the Ruby side. But what about the Rails  
side, how can I make sure I can start Rails 3 but use Rails 2 for  
“normal” work?  
I’m on OSX.

Cheers.

---

<div class="post-metadata">

**Author:** ![comopasta](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/59ef9b/32.png) [@comopasta](https://www.ruby-forum.com/u/comopasta)\
**Post date:** [May 15, 2010, 8:00am UTC](https://www.ruby-forum.com/t/can-i-play-with-rails-3-without-destroying-my-rails-2-setup/188622/2 "2010-05-15T08:00:09Z")

</div>

On May 14, 2010, at 12:23 PM, comopasta Gr wrote:

> I’m on OSX.
> 
> Cheers.

You want RVM. You can change not only your Ruby but also your GEMHOME.  
That means you can install Rails 3 in one install and never allow its  
gems to touch your Rails2 install. I installed REE and Rails3 for one  
installation and 1.8.7 and Rails 2 for another. Works great.

---

<div class="post-metadata">

**Author:** ![comopasta](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/59ef9b/32.png) [@comopasta](https://www.ruby-forum.com/u/comopasta)\
**Post date:** [May 15, 2010, 9:12am UTC](https://www.ruby-forum.com/t/can-i-play-with-rails-3-without-destroying-my-rails-2-setup/188622/3 "2010-05-15T09:12:59Z")

</div>

Thanks Steve!

Cheers.