It is very convenient for Mac users to upgrade OS X to the latest 10.11.4. This minor update of EI Capitan is free for all Mac users. Actually, most of Mac users who are using EI Capitan operating system have upgraded OS X to 10.11.4. A few of them are facing data loss problems after upgrading OS X to 10.11.4.
Whether you lose files during the upgrade process or you lose files when the OS X has been upgraded, you can easily recover lost files under Mac OS X 10.11.4 EI Capitan with professional mac data recovery software. Do Your Data Recovery for Mac will help you easily restore lost files after upgrading OS X to 10.11.4. But first of all, you should find the right software that is compatible with the OS X 10.11.4.