Writing an OS in Rust (Second Edition)

This post describes how to create a Rust executable that does not link the standard library. This makes it possible to run Rust code on the bare metal without an underlying operating system.

In this post we create a minimal 64-bit Rust kernel. We built upon the freestanding Rust binary from the previous post to create a bootable disk image, that prints something to the screen.

The VGA text mode is a simple way to print text to the screen. In this post, we create an interface that makes its usage safe and simple, by encapsulating all unsafety in a separate module and providing support for Rust's formatting macros.