If you wish to change the installation path or the specific
components that are installed by the MySQL Installation Wizard,
choose the Custom installation
type.
A tree view on the left side of the custom install dialog lists
all available components. Components that are not installed have
a red X icon; components that are installed
have a gray icon. To change whether a component is installed,
click on that component's icon and choose a new option from the
drop-down list that appears.
You can change the default installation path by clicking the
Change... button to the right of the
displayed installation path.
After choosing your installation components and installation
path, click the Next button to advance to
the confirmation dialog.