+ReactOS can only be installed on a machine that has a FAT16 or FAT32 partition
+as the active (bootable) partition. The partition on which ReactOS is to be
+installed (which may or may not be the bootable partition) must also be
+formatted as FAT16 or FAT32. ReactOS Setup can format the partitions if
+needed.
+
+ReactOS can be installed from the source distribution or from the bootable CD
+distribution. The two ways to install ReactOS are explained below.
+
+
+3.1 Installation from sources
+
+If you don't have an existing ReactOS installation you want to upgrade, then
+build a bootable CD as described above. Burn the CD image, boot from it, and
+follow the instructions to install ReactOS.
+
+If you have an existing ReactOS installation you want to upgrade, then to
+install ReactOS after building it, type 'make install' or
+'mingw32-make install'. This will create the directory 'reactos' in the top
+directory. Copy the contents of this directory over the existing installation.
+
+If you don't want to copy the files manually every time you run a
+'make install' or 'mingw32-make install', then you can specify the directory
+where the files are to be copied to during installation.
+
+Set the ROS_INSTALL environment variable. If you are on Windows this could be
+done by:
+
+ set ROS_INSTALL=c:\reactos
+
+If you are on Linux this could be done by:
+
+ export ROS_INSTALL=/mnt/windows/reactos
+
+Now run 'make install' or 'mingw32-make install' to install the files to the
+new location.
+
+
+3.2 Installation from bootable CD distribution