! Quick and Easy Triple Boot: Windows 7, RedHat 6.2, and Ubuntu 12.04

Important: Install in this order.

Windows install goes first, because the Windows install will replace previous non-windows start ups.
RedHat install goes 2nd, RedHat or CentOS will add itself and leave Windows in the start up.
Ubuntu install goes last, Ubuntu will add itself and leave Windows and RedHat in the start up.

Most of the other dual boots, require editing the grub or Windows start ups. The installs here are quick enough; that if you do not like your choices, you can start over. Earlier versions may cause problems. We are actually using CentOS instead of RedHat, because CentOS is free.
On the internet, there are many "how to convert your laptop to dual boot the existing Windows with the added linux". Programers might want the choice of these three on a dedicated PC. Many internet instructions relate to older versions.

For programing and for learning, I wanted to show recent interesting systems.
RedHat ( or free CentOS ) is a popular, powerfull, and reliable choice for servers.
Ubuntu is the non windows choice for free and friendly desktops. The base stable branch of Debian is used for many servers. Ubuntu is also available for servers and cloud computing configerations.

GParted multi boot Wind7 CentOS6.2 in Ubuntu12.04

In Ubuntu 12.04: Eclipse 4.2 Juno J2EE, PyDev, Python 2.7.3, Python 3.2, JDK 6 update 33, PHP, Android SDK 4.1 Jelly Bean . .

eclipse4.2 jdk u33 python 2.7 3.2 in Ubuntu

OracleSun (latest) manual install vs openJDK

Android SDK install for JellyBean Ubuntu

Grub boot startup menu and Ubuntu Dual Monitors

Grub boot startup menu

Ubuntu dual monitors

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