# Errors when installing Rails

**URL:** <https://discuss.rubyonrails.org/t/errors-when-installing-rails/8542>\
**Category:** rubyonrails-talk\
**Created:** [February 11, 2007, 4:04am UTC](https://discuss.rubyonrails.org/t/errors-when-installing-rails/8542 "2007-02-11T04:04:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Hemant\_Kumar](https://avatars.discourse-cdn.com/v4/letter/h/46a35a/32.png) [@Hemant\_Kumar](https://discuss.rubyonrails.org/u/Hemant_Kumar)\
**Post date:** [February 11, 2007, 4:04am UTC](https://discuss.rubyonrails.org/t/errors-when-installing-rails/8542/1 "2007-02-11T04:04:20Z")

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I don't know how, but rdoc doesn't seem to be installed with your ruby installation. You can choose to bypass rdoc installation with:

gem install rails -y --no-rdoc

Give it a spin and see what happens.

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**Author:** ![Ben\_Munat](https://avatars.discourse-cdn.com/v4/letter/b/ecd19e/32.png) [@Ben\_Munat](https://discuss.rubyonrails.org/u/Ben_Munat)\
**Post date:** [February 11, 2007, 5:06am UTC](https://discuss.rubyonrails.org/t/errors-when-installing-rails/8542/2 "2007-02-11T05:06:30Z")

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Brian Broderick wrote:

> What does Rdoc do and do I need it?

Ruby Documentation:

[http://rdoc.sourceforge.net/doc/index.html](http://rdoc.sourceforge.net/doc/index.html)

b