Whether it's for demo-ing Liferay or for other purposes, you may at some point wish to run a Liferay bundle from an external hard drive. Most of the time, this is straightforward. When starting 6.1.20 on a Macintosh, however, you may run into an error if your external drive is not formatted correctly (see below).
SEVERE: Error deploying configuration descriptor /liferay-portal-6.1.20-ee-ga2/tomcat-7.0.27/conf/Catalina/localhost/._ROOT.xml
Aug 8, 2012 2:20:44 PM org.apache.tomcat.util.digester.Digester fatalError
SEVERE: Parse Fatal Error at line 1 column 1: Content is not allowed in prolog.
org.xml.sax.SAXParseException: Content is not allowed in prolog.
If the external drive is formatted in the "ExFAT" format you may run into this issue. Reformatting the drive to "Mac OS Extended(Journaled)" should resolve the problem and you should be able to start the bundle.
Information: This information is provided for informational purposes only and does not constitute Liferay Liferay Subscription Services recommendation nor endorsement. Liferay also does not assume any responsibility for any instructions herein or referenced regarding this configuration or setup.