show more posts in categories and search

I like having just my most resent post on my main page, but by using the “show at most 1 posts” in the Reading option, this causes the theme to only return one search result and list only one category item at a time, with the “next” button.

If, I adjust the setting in the Reading option to “5” for example, the search results and catagories will list 5 results (with more function) and then the next button. But, the front page lists 5 most recent posts.

How can I keep one full-text posts on the homepage, but list all results with “more” function in category and search results page views?

thanks!