OSDev.org

yeah...
How do i make a bootdfloppy of my os? what programs you peolpe recomend?? and how do i do a "image" of that floppy to my hd that i can run it in Bochs??

I believe that Bochs has a program called bximage that makes an image for you (only used it in the Linux version, so I'm not sure if it's in the Windows version), then use a program like rawwritewin (or however it's spelled) to dump the image

hi

To make a boot-floppy you can use

For windows: use copyboot.exe (or) rawwrite.exe

For Linux: use dd

PS: I use djgpp,nasm and copyboot for osdev. (I am an windows user)

you can create a image using partcopy by John Fine. its very easy to use. this image can be used in BOCHS. you create a image of a floppy by inserting in your drive (A:) and using "partcopy -f0 0 168000 myimg.img 0" this should give you an image with the name myimg.img. Feel free to ask if you have any more doubts.

Out of curiosity, do you also use SEXE.EXE along with copyboot? I think they are written by the same author.

For the original message:

If you use NT (2000 or Xp too I think), you may not be able to use copyboot or rawwrite as I think windows nt blocks direct disk access. Instead you should use NTRW.EXE (NT rawwrite) which uses WinNT services to do direct disk IO. I'm not sure if NTRW can be used by Win95/98/ME users though.

-Robert

On Win NT, 2000, XP you can still use DOS programs that access the disk through BIOS interrupts. I have written a simple COM executable that puts my bootsector to disk using INT 13h and it works fine with Win 2000.

Thanks guys (and girls?)!!

this helps me lot!

Dear Robert,

Of course I use both XP and 2000, but I haven't had a problem with copyboot.exe.
Copyboot always copies by bootimage to the floppy disk. And if u want a copy I will send you one

modshah.

Yes, i have another problem about my kernel.bin and John Fine's bootf02.
I've downloaded an basic kernel (which was from some tutorial) and that kernels size was 4096bytes. bootf02 loaded that kernel succesfully. Then i tried to load my kernel (whose size was about 4324bytes) and when i boot Bochs, it finds floppy and start load it. I think that bootf02 failed to load my kernel.bin because bochs "stacks". Is the problem in bootf02?