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- From: padgett@tccslr.dnet.mmc.com (A. Padgett Peterson)
- Newsgroups: comp.virus
- Subject: Re: Clash between FDISK/MBR and scanners (PC)
- Message-ID: <0020.9301121242.AA22066@barnabas.cert.org>
- Date: 7 Jan 93 20:56:26 GMT
- Sender: virus-l@lehigh.edu
- Lines: 31
- Approved: news@netnews.cc.lehigh.edu
-
- >From: tck@bend.ucsd.edu (Kevin Marcus)
-
- >I recently installed Linux, a version of unix for the PC, in addition
- >to my regular dos partition. This comes with a small program called
- >"wini" which is a program, which occupies the MBR to allow me to
- >choose which OS I would like to boot into. It's my understanding
- >OS/half does somethign like this, also, or can do something like this.
- >If FDISK/MBR REWRITES the MBR with the basic, boring code that
- >normally is there with DOS, then if I use this method, I will destroy
- >the wini program, and restrict myself from booting into my Linux
- >partition. This is another drawback to fdisk/mbr.
-
- COHERANT is another OS that uses this method. Actually there are any
- number of other a-v solutions that will do as well (such as my own
- FixMBR which can produce a small executable file that will restore the
- original MBR) but FDISK /MBR has three great advantages:
- a) It is a no-brainer.
- b) Everyone who has DOS 5.0 has it.
- c) It will *not* lose/change the partition table.
-
- Given that you know FDSIK /MBR uses "basic, boring code" you probably also
- know how to use DEBUG to repair most anything that FDISK /MBR can, but for
- those who need to ask - K.I.S.S.
- Warmly,
- Padgett
-
- ps It is my understanding (David ?) that OS/2 uses selection through a
- replacement of the DBR (OBR ?) *not* the MBR and requires a more complex
- approach e.g. You boot. If the wrong OS comes up, you instruct a program
- to replace the DBR with the correct one then you boot again. Hopefully
- this time the correct OS comes up. Only IBM...
-