Extended Operating System Loader (XOSL) is a graphical boot manager released by Geurt Vos under GPL.
XOSL can dual boot over 30 various operating systems on a single disk.

Extended Operating System Loader (XOSL) is the world's only full featured free boot manager with a real, easy to use and full-blown graphical user interface.

Extended Operating System Loader (XOSL) is the world's only full featured free boot manager with a real, easy to use and full-blown graphical user interface.
Extended Operating System Loader allows you to boot operating systems from single or from multiple disk partitions. For every bootable system, you can configure which other partitions should be hidden. For every bootable system, as well as for the configuration screens, you can also enables password protection.
XOSL can be installed on a running DOS, Win9x or WinME system or on a small dedicated partition. It also includes a free partition manager.

Extended Operating System Loader (XOSL) Features:
Look & Feel
* User-friendly Graphical User Interface
* Full windowing system with mouse and keyboard support
* Resolutions up to 1600x1200
* Configurable mouse speed
* A set of color schemes
* Several color adjustment options
* Password protected boot configuration and settings
* Restart/Reboot/Shutdown
Booting Features
* Up to 24 boot items
* Microsoft file system partition hiding support
* Storing additional keys before booting
* Activate partitions (one per system or one per HD)
* Automatic booting (with timeout)
* Auto boot last operating system
* Password protection per boot item
* Boot master boot record on any drive
* Boot DOS/Windows 9x on any drive
* Hotkey per boot item
* Support for hard disks larger than 8Gb
* [XOSL 1.1.1] Coexist with virtually any other boot manager (boot original master boot record)
* [XOSL 1.1.2] Run Ranish Partition Manager 2.38 beta 1.9 from XOSL, without first booting an OS
* [XOSL 1.1.2] Master boot record virus protection
* [XOSL 1.1.3] Swap drives
* [XOSL 1.1.5] IDE CD-ROM booting by including Smart Boot Manager
XOSL is known to support
* BeOS
* MS-DOS
* FreeDOS
* Linux (with Lilo)
* Solaris
* VxWorks 5.x
* Windows 95/98/Me
* Windows NT/2000

Tell me the recommended short procedure for installing more Operating Systems and multi-booting
1. Create partitions
2. Install XOSL
3. Create Boot items before installations (hiding other Operating Systems partitions is highly recommended)
4. Restore XOSL if it has been overwritten.

Small complicated example showing how to install Windows NT, Windows 98, Windows 2000 & Redhat Linux 6.1:
1. Install Windows 98 on a primary partition.
2. Install XOSL.
3. Create another primary partition, and make it active.
4. To be on the safe side, hide the Windows 98 partition.
5. Install Windows NT4 (using the Service Pack 4 ATAPI driver) on a logical partition, with the boot loader on the primary partition.
6. Install Windows 2000 on another logical partition (which can share the same bootloader as Windows NT).
7. Install Linux on another logical partition, putting LILO on its partition.

The license of this software is Freeware, you can free download and free use this boot cd software.