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hello.s

# bootloader Create your own bootsector. Explore how programming in real mode feels, without any support of the operating system. In fact, start writing your own operating system. See https://www.staerk.de/thorsten/assembler_tutorial # compiling In this example I use Ubuntu Linux 22.04. Compile your bootsector with the command ``` nasm -f bin hello.s ``` Create your virtual 1MB bootdisk with the command ``` dd if=/dev/zero of=bootdisk.img seek=2K count=1 ``` Put your bootsector at the beginning of your virtual bootdisk with the command ``` dd if=hello of=bootdisk.img conv=notrunc ``` Manipulate your bootloader, put the magic bytes 55AA at the end. If you do not know how, watch https://www.youtube.com/watch?v=3C3u0eUPxZI Boot your virtual machine using the command ``` qemu-system-i386 -fda bootdisk.img ```

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