question about multi boot--vista, linux, xp

[paulga]

@swerdna

When you install xp it will wipe the MBR and put its own code there. There probbaly won’t be an advantage in putting the code into the linux partition, but it won’t hurt.

could you tell me how to remove the current grub , then reinstall to the linux sector.
and especially after installing xp, & fixing the boot using vista stuff, how to enter linux again (then fix the grub further)?