List of post titles in category (ignore the show post of reading)

Hello, I found some threads teach me how to list post title within category, but I found that if i set the options->reading->show at most = 1 post, it would ONLY show 1 title in that category, not all the post titles within that category.

My question is “How can I ignore the show at most post and display all posts within a category?”
cuz I just want to show 1 post in normal view, but when someone click category, it would show all list of post title.

Btw, the method i use to show list of post in category is to delete the_excerpt() in archive.php.

sorry my english is not good, hope u understand what i ask.

thanks!
breakfast