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Howto Remove BSD Boot Block from HD

Can anybody tell me how can I remove the bootblock from a HD that has had NetBSD or OpenBSD previously installed on it?
The problem is that the boot block is installed into the MBR and no anount of reinstalling Linux, Win2k, Solaris over the disk will prevent the BIOS from picking up the BSD boot block. The reinstall does not write low enough (or at least that's how it seems) to overwrite the BSD boot sector.
1 Solution
Looks like *BSD 'fdisk -i' will do it, or, you could use  MS's 'fdisk /MBR'.
dmccallumAuthor Commented:
Thanks Jim,
Someone has also pointed out that by doing a dd if=/dev/zero of=/dev/rdsk/disk_n bs=512 count=1, you can also clear it. It's this process that I used.
Thanks for your comments.

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