My b2evolution Version: 0.9.x

I receive the following error when I click on the edit tab in the back office or when I try to view my blog on the web.

I'm new to b2evolution and don't even know where to start to fix this. I've looked at the tables and they all seem fine.

Please, help!
Dawn

MySQL error!

Got error 28 from storage engine(Errno=1030)

Your query:
SELECT DISTINCT ID, post_author, post_issue_date, post_mod_date, post_status, post_locale, post_content, post_title, post_urltitle, post_url, post_category, post_autobr, post_flags, post_wordcount, post_comments, post_renderers, post_karma FROM (evo_posts INNER JOIN evo_postcats ON ID = postcat_post_ID) INNER JOIN evo_categories ON postcat_cat_ID = cat_ID WHERE 1 AND ( ( post_status = 'private' AND post_author = 1 ) OR post_status IN ('published','protected') ) AND post_issue_date <= '2007-08-14 13:04:40' ORDER BY post_issue_date DESC LIMIT 8