Bootloaders. How to create them?

[tfurtado]

Hi people!
I want to create a bootloader for my starting new OS.
If you could give me tips about its creation, I will be very glad.
I want to know about file systems too. Tell about them please.
If you know where can I find GOOD tutorials about OS Dev and Assembly language, put the address here, please.

Thanks!

[pskyboy]

try

http://www.nondot.org/sabre//os/

and

http://osdev.neopages.net/

[Tim]

Here's the usual response to somebody learning boot loaders:

Don't bother learning how to write a boot loader. Use some other boot loader (e.g. GRUB) and learn how to write a good OS instead. Then you can write your own boot loader later, when you know a lot more.

[tfurtado]

Thanks Tim Robinson!

So I need to know the basic steps on creating a VERY simple kernel.
I want to know the steps I need to make to getting it working.
I need to know how to use my kernel with others bootloaders.

Thanks for any help.

[jrfritz]

The perfect beginner bootloader tutorial:

http://www.nondot.org/sabre/os/files/Booting/nasmBoot.txt

[jrfritz]

You can test making your kernel with using my bootsector. It's simple:

write bootsector's boot.bin to bootsector. Put your C kernel after the 1'st sector.

[tfurtado]

Thank you very much for the tutorial! It was very usefull! Now I can write a little bootloader.

Tom, I need to know how to put anything beyond the 1st sector. When I try to do this using debug, I get an error message (write protection).

I must know about filesystems too. Is usefull to create one?

Any help is welcome!

[jrfritz]

Hmmm...did you disable the write protection on the floppy? ???

[tfurtado]

Do you mean the write protection pin? If so, I didn't touch it when after I wrote the bootsector.

[jrfritz]

I think your floppy is write protected. If not, try partcopy.

[tfurtado]

Can you teach me how to use partcopy?
(I'm a completely newbie to this subject..)

If you have ICQ, we can communicate faster.
My number: 101210221

[jrfritz]

I don't know how to use partcopy. I use linux for development, not Windows or DOS.

Berserk, or someone else here uses partcopy.

[tfurtado]

Ok..

I need help doing my kernel. Can you help in the topics I need?

[jrfritz]

Yea...what do you need help with? ( are you talking to me, or asking about partcopy?)

[Schol-R-LEA]

Some information on using PartCopy can be found in this thread, reply #5.