dh00mk3tu / very-cool-os

Lets build a Kernel from absolute scratch using Assembly & hopefully, C

very-cool-os

This repo is to test out making an operating system from absolute scratch and it is not a Linux based operating system. Practicing Assembly and stuff for Astra OS.

Once we've booted our Kernel, our objective will be to switch to C to print strings on the Screen instead of Assembly; we will then proceed further with C for I/O operations. The project is taking help and inspiration from multiple sources like books, videos, articles and forums. So it's hard to list them all but I will try my best to list them while I document this project.

I'm learning myself and I will make mistakes as well. But I will learn from them so every sort of input is great help, really.

With that said, god speed!

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Updates

Update Date	Title
Update 1: 06/04/2021	Writing Boot Sector.
Update 2: 09/04/2021	32 Bit Print Mode.
Update 3: 10/04/2021	GDT in Assembly.
Update 4: 20/04/2021	Entering 32 Bit Protected Mode.
Update 5: 21/04/2021	Cross-Compiler.
Update 6: 22/04/2021	C The Kernel.
Update 7: XY/04/2021	Soon...

Build Instructions

On Windows

./nasm.exe -f bin assembly_file.asm -o output_binfile.bin

I'm calling nasm as ./nasm.exe because I have not installed it globally. I installed both nasm & QEMU locally in the project directory. Next step is to emulate the image file in QEMU.

Again, since QEMU is also locally installed, cd into the QEMU directory. Once done, run the following command.

./qemu-system-x86_64 output_binfile.bin

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On Linux

On Linux it is fairly simple because both NASM and QEMU are installed globally by the package manager.

nasm -f bin assembly_file.asm -o output_binfile.bin

Again, let's emulate the image file.

qemu-system -x86_64  output_binfile.bin

very-cool-os's Issues

https://github.com/dh00mk3tu/very-cool-os/blob/main/resources/install-depnd.sh repetition of 'sudo apt install gcc -y' recommended change 'sudo apt install g++ -y'

the 'gcc' package is repeated more then once and as far as i saw the code you are working with 'g++' but i didn't saw it in the apt commands so it might not work as it is a 'dependency hell' and after checking from pkgs.org, the package is on ubuntu repos.