Download the installation files and assign them necessary access permissions:
Go to the Acronis Web site.
Depending on the machine platform and your edition of Acronis Backup & Recovery 11.5, download the installation file or files (.i686 or .x86_64 files).
Copy the installation files to a directory on the machine where you want to install Acronis Backup & Recovery 11.5.
Go to the directory where you copied the installation files, and then run the following command: