How to set where maven installs plugins?

Question

I've tried building a project with maven 2.2.1 and received the following error
Notice the "directory cannot be created" - the reason I believe is that D: is a drive that was encrypted by TrueCrypt and is now actually H: (D: remains as a physical drive not accessible through Windows)

How do I make maven try to install the plugin on H: instead of on D:?

C:\dev\some-project>mvn -f uberPom.xml install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Declarations
[INFO]    task-segment: [install]
[INFO] ------------------------------------------------------------------------
Downloading: http://download.java.net/maven/2/org/apache/maven/plugins/maven-site-plugin/2.0-beta-7/maven-site-plugin-2.0-beta-7.pom
[INFO] Unable to find resource 'org.apache.maven.plugins:maven-site-plugin:pom:2.0-beta-7' in repository maven2-repository.dev.java.net (http://download.java.net/maven/2)
Downloading: http://repo.marketcetera.org/maven/org/apache/maven/plugins/maven-site-plugin/2.0-beta-7/maven-site-plugin-2.0-beta-7.pom
[INFO] Unable to find resource 'org.apache.maven.plugins:maven-site-plugin:pom:2.0-beta-7' in repository internal (http://repo.marketcetera.org/maven)
Downloading: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-site-plugin/2.0-beta-7/maven-site-plugin-2.0-beta-7.pom
[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-site-plugin:pom:2.0-beta-7' from repository central (http://repo1.maven.org/maven2): Specified destination directory cannot be created: D:\.m2\repository\org\apache\
maven\plugins\maven-site-plugin\2.0-beta-7
Downloading: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-site-plugin/2.0-beta-7/maven-site-plugin-2.0-beta-7.pom
[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-site-plugin:pom:2.0-beta-7' from repository central (http://repo1.maven.org/maven2): Specified destination directory cannot be created: D:\.m2\repository\org\apache\
maven\plugins\maven-site-plugin\2.0-beta-7
Downloading: http://download.java.net/maven/2/org/apache/maven/plugins/maven-site-plugin/2.0-beta-7/maven-site-plugin-2.0-beta-7.pom
[INFO] Unable to find resource 'org.apache.maven.plugins:maven-site-plugin:pom:2.0-beta-7' in repository java.net (http://download.java.net/maven/2)
Downloading: http://repo.marketcetera.org/maven/org/apache/maven/plugins/maven-site-plugin/2.0-beta-7/maven-site-plugin-2.0-beta-7.pom
[INFO] Unable to find resource 'org.apache.maven.plugins:maven-site-plugin:pom:2.0-beta-7' in repository internal (http://repo.marketcetera.org/maven)
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error building POM (may not be this project's POM).


Project ID: org.apache.maven.plugins:maven-site-plugin

Reason: POM 'org.apache.maven.plugins:maven-site-plugin' not found in repository: Unable to download the artifact from any repository

  org.apache.maven.plugins:maven-site-plugin:pom:2.0-beta-7

from the specified remote repositories:
  central (http://repo1.maven.org/maven2),
  java.net (http://download.java.net/maven/2),
  internal (http://repo.marketcetera.org/maven),
  maven2-repository.dev.java.net (http://download.java.net/maven/2)

 for project org.apache.maven.plugins:maven-site-plugin


[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5 seconds
[INFO] Finished at: Sat May 21 14:45:51 IDT 2011
[INFO] Final Memory: 2M/46M
[INFO] ------------------------------------------------------------------------
Solution

You can set the location of your local repository to a different folder by modifying the global settings file (located in \conf\settings.xml). Any plugins and artifacts would then be installed/downloaded to that location.

The following snippet would set the local repository to h:\Maven\repository for example:

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
                  http://maven.apache.org/xsd/settings-1.0.0.xsd">
  <localRepository>h:\Maven\repository</localRepository>
  ...