I believe the virus protection in the BIOS prevents writing to the MBR or
messes it up.   I believe also its recomended you shut the virust
detection off when u install NT or Linux or any OS

--
Michael S. Dunsavage

"Linux: the operating system with a CLUE...
Command Line User Environment".
(seen in a posting in comp.software.testing)




On Tue, 28 Dec 1999, Wayne Dyer wrote:

> Chris Dowling wrote:
> > sorry, but I can't see the problem :)
> > 
> > try making a linux boot disk. then format your mbr. I don't know how to
> > do this under linux, but if you have a dos boot disk then you can usr
> > "fdisk /mbr". Once you have cleared it, use your bootdisk to boot into
> > linux, and run lilo to restore the boot record.
> [...]
> 
> Make that a write-protected DOS boot disk...
> 
> This still might trigger the BIOS' virus "protection", depending on how it
> determines if the boot sector has been modified.
> 
> > > How do I remove this virus -- it's a nasty one in that I can't boot NT (dual 
>boot system)
> > > but Linux does work.
> [...]
> 
> Keep in mind that if you have NT installed, the fdisk /mbr will wipe out
> booting to NT as well, as the DOS command replaces the bootsector with a
> generic Win9x/DOS boot sector.  If you made an Emergency Recovery Disk
> (start->run->rdisk), you can recover.  Keep in mind that you can't use an
> ERD from another system in nearly all cases.  If you don't have one, you're
> probably gonna need to reinstall NT.  (I'd do it to another directory, so
> you get the boot files in without messing with the installed OS, then edit
> the boot.ini file after you're dual booting to point back to the original
> OS, then reapply the service pack of your choice to update the system
> files.
> 
> Now if you're using LILO to point to NT's boot sector, you're going to be
> in the same boat.  If you're using NT's boot loader to point to the LILO
> boot loader, do the fdisk /mbr, then lilo, then NT.
> 
> -W-
> 
> 
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> 
> 


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