Robots.txt - Disallow subdomain only

[pavlovapete]

I am new to using robots.txt on subdomains.

We have recently added a new subdomain forums.mysite.com and I'd like to exclude bits until we are ready to launch.

If I use:
User-agent: *
Disallow: /

Will that exclude the robots from the whole domain?

I am planning to put the robots.txt in the subdomain folder - should I be putting it in the main root domain instead?

Thanks for any advice

[phranque]

the robots.txt file must exist in the root directory of the relevant hostname.
for example you could have a /path/to/http/docs/robots.txt file for http://example.com/robots.txt and another /path/to/http/docs/subdomain/robots.txt file for http://subdomain.example.com/robots.txt

[pavlovapete]

Sorry for the late reply phranque - I missed your reply.

And thanks for the info - I'll be implementing what you suggested.

Cheers