Need help to modify WP Archive page

Currently my WordPress Archive page will show 10 posts and you will have to click the Older Posts link at the bottom to read more of the older posts.

I need to modify the code so that when the Archive is clicked, it will show the full month's posts in one single page.

<?php get_header(); ?>

		<div id="content">

			<?php if(have_posts()) : ?><?php while(have_posts()) : the_post(); ?>
			<div class="post" id="post-<?php the_ID(); ?>">
				<h2><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><?php the_title(); ?></a></h2>

				<div class="entry">
					<p class="entry-meta">
					<?php the_content(); ?>
					<?php wp_link_pages(__('Pages:')); ?>


					<?php if(function_exists('the_ratings')) { the_ratings(); } ?>

					<p class="entry-meta"><span class="entry-date"><?php the_time('M d, Y'); ?></span><br /><span class="cat-links"><?php _e('Filed under:'); ?> <?php the_category(', ') ?>  Tags: <?php if(function_exists("the_tags")) the_tags(' ', ', ', ''); ?></span><?php edit_post_link(__('Edit'), ' . ', ''); ?></p>
				</div>

			</div>
			<?php endwhile; ?>

			<div class="navigation">
				<?php if(function_exists('wp_pagenavi')) { wp_pagenavi(); } else { ?>

				<?php next_posts_link(__('<span class="nav-previous alignleft">Older posts</span>')) ?>
				<?php previous_posts_link(__('<span class="nav-next alignright">Newer posts</span>')) ?>

				<?php } ?>
			</div>

			<div class="clear"></div>

			<?php else : ?>

			<div class="post">
				<h2><?php _e('404 Error: Not Found'); ?></h2>
				<div class="entry">
					<p><?php _e('The page you are looking for is not here.'); ?></p>
				</div>
			</div>

			<?php endif; ?>

		</div>

	</div>

<?php get_sidebar(); ?>

<?php get_footer(); ?>

HTML:

Thank you for reading.

 

Try inserting <?php $posts = query_posts($query_string . '&posts_per_page=-1'); ?> between <div id="content"> (line 2) and <?php if(have_posts()) : ?><?php while(have_posts()) : the_post(); ?> (line 3)

The posts_per_page=-1 option sets it to show all pages.

Hope that helps.

 

Thank you so much.
I am so grateful for the help.
I was googling for hours just to find a solution like this but you are better than Google.

Thanks again.