how to write our own grub mbr

From: yogesh (ypjofficial_at_indiatimes.com)
Date: 09/19/03 

Date: 19 Sep 2003 01:19:43 -0700

hello all,
i have installed win98 ,win2000 and red hat linux on my 40 GB pIV
system.
i partitioned all the necessary drives with the help of partition
magic.
few days back , the partion magic informed me that there is some
problem with some particualr sectors and i need to check it.
so i did and in the process the mbr (grub) was erased. i don't know
how but it happened.
and while next booting the system was unable to show me the boot
manager though it showed the grub commnad prompt.
well then i booted the system from win 98 bootable floppy and restored
the dos mbr by 'fdisk/mbr' but in the process i lost the access to
linux since there is no grub.
so my question is how can i boot linux ? i know its still there on my
system with all the data intact.(to make the things more complex.... I
don't have the linux bootable floppy but i have the knoppix CD)???

also is there any way to write our own mbr ???

regds,
yogesh joshi

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