|“Ubuntu 9.10, codenamed Karmic Koala, is the next major release of the popular Ubuntu Linux distribution…The alpha 2 release ships with GRUB 2, the next-generation of GNU’s GRUB bootloader.”|
There are still some aspects of GRUB 2 that are not yet working properly in this alpha release, the most notable of which is support for booting other operating systems. Users with multiboot configurations are encouraged to wait for alpha 3 or use a workaround to install GRUB 1. The Ubuntu developers are seeking help from the community to test the new version of GRUB on a wide range of hardware configurations. Testing instructions and a growing list of results can be found at the Ubuntu wiki.
If you want to test alpha 2 yourself, you can download a CD image from the Ubuntu website.