How can i keep my databases when installing PostgreSQL ?

Hello everybody,<br /><br /> i must reinstall PostgreSQL, because the installed server does not work anymore. Because
oflost disk sectors the server can not be started in the system-services GUI. The result of the starting request is<br
/>"Fehler 1053 Der Dienst antwortet nicht auf die Start oder Steueranweisung"<br /><br /> What is the doing to preserve
existingdatabases, when reinstalling PostgreSQL ?<br /><br /> Can anybody help me ?<br /><br /> Best regards,<br /><div
class="moz-signature"></div><p>JosefSpringer<br /><br />