OSDev.org

Hi my name is Troy, I'm 14 years old and have been trying to make my own os. Its been quite difficult, but so far its going well. We have a kernel that compiles, but, my issue is, how do I get it to boot? i know it will work, but we would like to use grub. And every time I compile, it turns into a obj file. I am using Bloodshed dev-c++. How do I correct this problem? I would like a different format. I also tried the one on osdev.org with the linker.ld but that didnt work because i have a 64bit PC. All help would be appreicated.

-troy


kanagawa-os.com/project.

It's nice to see other OS developer who is also 14 years old.
To get your kernel to boot with GRUB, you need to create the multiboot header somewhere in the first 8 KB of your kernel. Which compiler you're using doesn't matter. GRUB can boot any file with a valid multiboot header.

Follow http://wiki.osdev.org/Bare_Bones. It's our standard tutorial.

omarrx024 wrote:Which compiler you're using doesn't matter.

A cross-compiler is recommended, and I don't think, that GRUB can load anything with just a header, because some file formats need specific setup.

Follow Bare Bones from wiki and you will get a boot-able kernel... Don't forget to configure a cross compiler... If you have a problem, you can here, there is a lot of people that can help you... But before post anything here, a Google Search can be magical )

Roman wrote:A cross-compiler is recommended, and I don't think, that GRUB can load anything with just a header, because some file formats need specific setup.

Yes we should use a cross-compiler. Oh, and from the Wiki:

GRUB ... can load kernels in various binary formats, including "generic" ELF, FreeBSD a.out, flat binary, and "generic" executables (any file with a valid Multiboot header). - GRUB

omarrx024 wrote:Oh, and from the Wiki:

GRUB ... can load kernels in various binary formats, including "generic" ELF, FreeBSD a.out, flat binary, and "generic" executables (any file with a valid Multiboot header). - GRUB

Load, but not prepare. GRUB won't magically do relocation for an unknown format, I guess.

Roman wrote:Load, but not prepare. GRUB won't magically do relocation for an unknown format, I guess.

It won't relocate, but it will execute. Anyways, most kernels will start at 0x100000.

Hehe, I'm 23, I am not experienced enough for OsDev yet, but seeing two 14 year olds being able to OsDev gives me hope.

I wanted to program since I was your age, but I was making up excuses back then, until the internet was able to give me free resources (thanks

Hey, there are three 14 years old kids, I am 14 years old too )

Thank you very much

TheLittleWho wrote:Hey, there are three 14 years old kids, I am 14 years old too )

There are four.

Roman wrote: There are four.

Now, five.

muazzam wrote: Now, five.

Six.

I'm 15 now. Why did I have to age? Oh, right; because I'm not Ash from pokemon.