This article describes how to install PHP for Apache on Linux (Fedora 12).
 Step 1: Install PHP  run the following command as root:

# yum install php


 Setting up Install Process
Resolving Depende [ ... ]

The first 512 bytes of a partitioned storage device is called the MBR (master boot record). The main reason why I think you should backup the MBR is because it contains the disks primary partition tab [ ... ]