You can follow the WordPress docs and leave WordPress in a directory but have it appear to be in root. See http://codex.wordpress.org/Giving_WordPress_Its_Own_Directory#Using_a_pre-existing_subdirectory_install
This will correctly change the location in the database. This might be the best way to go if the host requires WordPress to be in a subfolder for some reason.

Or, you can move all the files to root. See http://codex.wordpress.org/Moving_WordPress This link also includes
recovery information in case you make mistakes in the move.
Related Posts:
- Migrating a WordPress site from One Hosting Provider to Another?
- Hosting WordPress on Azure?
- How do you seamlessly switch hosting?
- Hosting alternatives to WordPress.com [closed]
- Hosting WordPress on Google Apps Engine (GAE)
- nginx or cherokee ( +php-fpm ) for WordPress backend?
- Running WordPress on low-end hardware/resources?
- Where should I host my images?
- Best hosting for WordPress blog(s)? [closed]
- What issues would you face if you use Nginx
- How to detect that site is hosted on WPEngine?
- Is there a way to figure out the way to access hosting if I have admin privilege?
- WordPress hosting – Shared/dedicated server? Any recommendations? [closed]
- Host wordpress on a subdirectory of a Rails application
- Do I need “wordpress hosting” to host wordpress?
- Google Site and WordPress
- Deploy WordPress From Local Docker to Hosting Provider
- Do i need the git directory?
- How much should this hosting cost? [closed]
- How can I view or FTP into my WordPress site hosted on AWS?
- How can I use more than 2 DB’s
- WordPress out of memory allocated issue?
- Switched hosts to one with cPanel. To transfer my blog should I do the WP install or just be uploading my old WP directory & database?
- Free swf files hosting for wordpress blog
- Has anyone used the wordpress plugin w3-total-cache on a Dreamhost VPS successfully? [closed]
- WordPress moved to a new server with a new databank. Just Theme no plugins. Site worked for minutes then went offline. cant login. Server says 408
- Dynamic sites and hosting limits: PHP Workers VS User Processes Per Sec Limits
- Configure WordPress Installation autoinstalls via Softaculous in WHCMS [closed]
- “508 Resource Limit Is Reached” on WordPress site
- Free WordPress Hosting with Custom Themes? [closed]
- Recommendation for server config for WordPress Staging servers [closed]
- Choose specific kind of hosting service for WordPress?
- Is my host the problem?
- Is Windows hosting a bad idea for wp?
- Stepping up my game with WordPress hosting [closed]
- Why is WordPress filtering Pastebin URL’s
- Different Server for Images
- How to host and manage for clients
- Fantastico pros and cons
- Add wordpress to only one domain in shared hosting with multiple domains
- lost all the links in WordPress after changing hosting
- Unable to Edit Destination settings – 1and1 hosting [closed]
- Hosting wordpress on Amazon [closed]
- How many WP websites can go on one shared hosting account?
- Hostinger masked redirection to wordpress website
- What’s more important for supporting concurrent users on an elearning site with dynamic content, CPUs or RAM?
- Resting a site for a couple of years
- A way to check if wordpress installation is self-hosted or hosted via wordpress.com?
- WIll it be a good idea to host my website images on a 3rd-party service?
- WordPress transfer problems Cant’ find variable jQuery
- Alternatives to hosting WordPress post content?
- Migrating existing site to Azure is slow
- How to check the speed of a WordPress site on different hosts without WordPress access?
- Problem With DNS or WordPress installation>
- Minimum EC2 Requirements for a stable WordPress site
- Integrate wordpress before hosting
- Factors for NON-cached performance?
- WordPress working only in directory named “wordpress”
- Will it make any difference if I have CDN on the same server but different directory?
- Need to delete a wordpress website from Cpanel
- WordPress hosting good practice
- Can I host wordpress separately on one hosting account?
- I am looking for a specialist WordPress host [closed]
- How to Disconnect My Domain Name?
- Difference between WordPress stand alone & through host gator
- Call to undefined function _deprecated_file() in class-smtp.php
- Limit the harddrive storage of multiple WordPress instances on one webserver
- Help with cPanel and sending email
- Essential technical features for high-end WordPress web hosting? [closed]
- How to run WordPress across 2 VMs for high availability
- Restoring WordPress posts from database only
- Running several WordPress sites on same core / plugins?
- Htaccess for Wordpess set on single subdomain
- How to write files in hosting in admin dashboard?
- Concurrent / simultaneous MySQL connections
- Woocommerce Storefront WordPress Ignore Media Gallery Images and use External 3rd Party Host
- cross-host benchmarking with wordpress
- What can I expect when moving from a hosted (WordPress.com) blog to one hosted by Page.ly
- How to use WordPress for class notes?
- WordPress domain configuration on a different server
- wordpress website host price and security [closed]
- Why does do_robots() Allow: /wp-admin/admin-ajax.php by default?
- Hosting my WordPress site out of a subdirectory
- restore a db after bad backup
- Removing the WordPress.com ribbon
- What is required in the hosting environment for WordPress to process an image into multiple sizes?
- How to change archieve frequency of the media file in uploads folder for wordpress blog
- How can I install WordPress as blog provider , stable?
- syntax Highlighting on wordpress.com blog
- How do I change the wpstaging.com domain to new domain without damaging the website?
- I want to embed mystream video in my wordpress site
- Error 404 Display on otherlinks apart from homepage
- How can I figure out what is making my WordPress site so slow?
- WP website won’t accept any new content – need dedicated hosting?
- What’s the best way to redirect to a new wordpress website?
- WordPress fails when my post is larger than 1400 words
- Synchronize wordpress site between two different servers
- Your PHP installation appears to be missing the MySQL … After deleting and restarting from cpanel
- How to import external media items into wordpress media library (without using storage)
- How to connect WordPress media to another host?