Script for getting all the sources and building second stage boot loader

build.sh

# Install pre-requisites
sudo apt-get update
sudo apt-get -y upgrade
sudo apt-get install -y build-essential
sudo apt-get install -y nasm
sudo apt-get install -y qemu

# Download the sources
curl https://gist.githubusercontent.com/ghaiklor/3ef5a07b3de1beb964555183dee18621/raw/59cb9ba42fd71631b0bc0c55e2a27c38f0e8ffaf/boot.asm > boot.asm
curl https://gist.githubusercontent.com/ghaiklor/d63e5183773770e07854b5d799ef3a44/raw/fcdc0652fa1c39c5e76379e1bd58ac49922feeeb/loader.asm > loader.asm
curl https://gist.githubusercontent.com/ghaiklor/bd41fa06d0af6af1adf59e13e12fee7a/raw/fd0446e23f102093bc348f66681614aca264eeef/loader.c > loader.c

# Compile first stage boot loader
nasm boot.asm -f bin -o boot.bin

# Compile second stage boot loader
nasm loader.asm -f elf32 -o loader_entry.o
gcc -O0 -g -ffreestanding -m32 -c loader.c -o loader.o
ld -o loader.bin -m elf_i386 -Ttext 0x1000 loader_entry.o loader.o --oformat binary

# Make full image
cat boot.bin loader.bin > image.bin

# Run on QEMU
qemu-system-i386 -fda image.bin