two .htaccess, mod_rewrites ? redirect to controller method

[eluser]coldfire82[/eluser]
First thing first: not a mod rewrite expert but it should be easy for experts here!

Hi,

I have two CI installations and both have different .htaccess files,

First .htaccess in root folder i.e.

http://mysite.com/

Second site & .htaccess in folder below (its temporary installation so dont bother why i have it) i.e.

http://mysite.com/business/


First .htaccess does nothing instead of taking care of index.php in urls.
Here it is,

Code:

<IfModule mod_rewrite.c>
  RewriteEngine on
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteRule ^(.*)$ index.php?/$1 [L,QSA]

  RewriteCond %{QUERY_STRING} ^utm_source=(.*)
  RewriteRule ^$ index.php?/$1 [L]
</IfModule>

In Second, I want to write a rule so that I get

http://mysite.com/business/<business_id> e.g. http://mysite.com/business/1
TO
http://mysite.com/business/<controller>/...usiness_id> e.g. http://mysite.com/business/index.php/ind...ess_unit/1

I tried to use this @thread -> http://ellislab.com/forums/viewthread/77892/
as

Code:

# map mysite.com/user_name to mysite.com/ci_folder/controller/method/user_name
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !^/business/
RewriteRule ^(.*)$ /business/index.php/indexg/business_unit/$1

BUT, the result was a 404 and does not redirect to

http://mysite.com/business/index.php/ind...ess_unit/1

Any help?

What if I dont have a ci_folder?