winxp freebsd dual boot with freebsd on second HD

Abe Olson bung-foo at
Sat Sep 18 17:20:53 PDT 2004

In the handbook it says that, in cases where you have freebsd on the 
second disk and windows on the first, that you have to install the 
freebsd boot manager on both disks. I discovered this after I had 
installed freebsd. I am currently trying to install the freebsd boot 
manager on my first disk by following the instructions here:

The instructions say:
"Other operating systems, in particular Windows® 95, have been known to 
overwrite an existing MBR with their own. If this happens to you, or you 
want to replace your existing MBR with the FreeBSD MBR then use the 
following command:

# fdisk -B -b /boot/boot0 device

Where device is the device that you boot from . . ."

When I run this command, it asks me if I want to write a new boot block 
and then it asks me if I want to write a new partition table (We finally 
arrive at my question) Won't writing a partition table on my windows 
disk destroy the data on that disk? I tried saying no to writing a 
partition table but I still cannot boot both OS's from the first disk.

Thanks for your time and knowledge folks.


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