etriceu / osdev

Simple x86 operating system

operating-system

Simple operating system for x86 architecture.

Supports

• Video: 80x25 color text mode
• Disk: ATA PIO 24bit
• Keyboard: PS2 US QWERTY

Features

• 32 bit Protected Mode
• ISR
• Memory manager
• Own file system
• ELF exec
• System calls
• User software

Build & run

#build
make all

#run
qemu-system-x86_64 -hda myos.img -m 1024

#.img
#./sysimg -h #manual
./sysimg myos.bin myos.img 10 #[additional files/programs]

#.iso (only bootable kernel)
mkdir iso
cp myos.bin iso/
mkisofs -no-emul-boot -o myos.iso -b myos.bin iso/

#installation
dd if=myos.img of=/dev/sdx
#if you want the system to automatically mount the filesystem then put it on primary master disk.