i've 3 partitions:
-a vfat partition(no windows anymore)
-a ext3 partitoin
-a reiserfs 3.6 partition

i use grub to boot:
-a knoppix-debian
-a gentoo

but i want to replace my old knoppix-debian with a new knoppix but with an iso and not an hd-install

so i've searched a little bit on this forum and:
-there is a lot of topics that relies on windows,lilo...
-i dont understand if i needs to install something in order to boot on normal partiiton(non windows,non ntfs)

so:
do i need to modify grub or install a new one
or:
do i only need to edit menu.lst