https://github.com/marcelog/boot-sector-tools

Made in assembler (A86), lets you play with your boot sector. Not too useful in this day and age, but good to learn about certain things
https://github.com/marcelog/boot-sector-tools

a86 assembly boot x86

Last synced: 15 days ago
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Made in assembler (A86), lets you play with your boot sector. Not too useful in this day and age, but good to learn about certain things

• Host: GitHub
• URL: https://github.com/marcelog/boot-sector-tools
• Owner: marcelog
• Created: 2011-02-18T19:24:28.000Z (almost 14 years ago)
• Default Branch: master
• Last Pushed: 2011-02-18T19:25:03.000Z (almost 14 years ago)
• Last Synced: 2024-11-09T06:05:57.946Z (2 months ago)
• Topics: a86, assembly, boot, x86
• Language: Assembly
• Homepage:
• Size: 93.8 KB
• Stars: 0
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: readme

Awesome Lists containing this project

README

        
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Note: This software is obviously old and deprecated (who uses dos

nowadays??). But it still is a good way to learn about certaing things.

Enjoy ;)

--------------------------------------------------------------------

                        Read Boot and Write Boot 1.0

                        ----------------------------

                                Copyright (c) 1999 by Marcelo Gornstein 

Yes. It's me again. Hi. This time with some DOS stuff.

Well, I started this two little, nice and useful (I guess) programs

because I had the right computer with the right compiler in the right

boring class ;).

Ok, Read Boot reads the boot sector (sector 0) from the first floppy

drive (A) and writes it to a file. You may pass the filename as the

first argument. If no filename is given, it will be called "BOOT.SCT".

For example:

C:\>rboot                  will download the boot sector to the file boot.sct

C:\>rboot file.ext         will download the boot sector to the file file.ext

And Write Boot makes the exact opposite. Reads 512 bytes from a file and

then overwrites the boot sector.

For example:

C:\>wboot                  will read the file boot.sct

C:\>wboot file.ext         will read the file file.ext

Is this useful?

---------------

Well, that depends. First of all, I did this programs with an educational

intention.  No, don't laugh. It's true ;)

But let's face it....I did collect viruses during the DOS era. And with

this program you may continue your collection by just "grabbing" the

boot sector virus from the floppy and putting it in a file.

And how about "grabbing" a known-clean boot sector and disinfect

any floppy from ANY boot sector virus in a few seconds?

I included some images for your own experiment.

Notes:

-----

This program is under the GNU/GPL version 2 license.

Both programs do compile with A86. But you should have no problems with

other compilers.

I (Marcelo Gornstein) don't take any responsability from the consequences

derived from your use of these two programs. Legal stuff, you know. Had

to be there ;)

Send me your comments, suggestions, etc.

Regards,