Two websites on one hosting space

Try reviewing Moving_WordPress.

I read thru the moving_wordpress link above, and I changed:

Settings->General Settings->Site Address (URL) to https://w2.com

and kept

Settings->General Settings->WordPress Address (URL) to https://w1.com/w2

Unfortunately this breaks every single link my w2.com – w2.com loads up fine, but clicking on any link there results in an ‘internal server error’. Before the change I was able to access the links without errors. What am I doing wrong?

I also want to point out that on my domain name setting, I have set:

https://w2.com to point to https://w1.com/w2

and https://w1.com/w2 is the root of my wordpress installation

I have been trying to figure out whats wrong all day without any progress. After I set the ‘Site Address (URL)’ to https://w2.com, I added a new post, but it does not even appear on the main page (main page shows a list of posts starting with the latest). However if I change ‘Site Address (URL)’ back to https://w1.com/w2, the new post I just added appears on the main page. Any ideas what I am doing wrong? How do I make the site so that it shows up as https://w2.com/xxxx rather than https://w1.com/w2/xxxx?