First of all, I have already seen all questions about this problem in this website and stackoverflow. My problem is a bit different.
I have installed Q2A in `root/subdir1/subdir2/`
I added htaccess file with this situations:
uncommented `RewriteBase /`
uncommented `RewriteBase /subdir2/`
But in no state, first option is actived!
Note: I made a subdomain (sd.example.com) to `subdir1/subdir2`