E95

Experimental operating system that probably compatible with Windows applications and drivers.

Build Requirements

• NASM
• GCC
• dosfstools (provides mkfs.fat)
• mtools (provides mcopy)
• GNU Make
• QEMU (for testing, optional)

Installing on Debian/Ubuntu

sudo apt install nasm gcc dosfstools mtools make qemu-system-x86

Installing on Fedora

sudo dnf install nasm gcc dosfstools mtools make qemu-system-x86

Installing on Arch Linux

sudo pacman -S nasm gcc dosfstools mtools make qemu-system-x86

Building

Assemble the bootloader:

make bootloader

Build the FAT32 disk image:

make image

Testing

Run the image in QEMU:

make test

Cleaning

Remove build artifacts:

make clean

Copyright and License

Copyright (c) 2026 Erdem Ersoy (eersoy93)

Licensed with Apache License 2.0, see LICENSE file for full license text.

NOTE: E95 is written with GitHub Copilot and Cursor IDE.

NOTE: Some standard include headers from https://codeberg.org/OSDev/freestnd-c-hdrs-0bsd.