v0.3.0 - Simple File System & ATA Integration

Daxo OS v0.3.0 - Milestone: Simple FAT-like File System on ATA Driver
We have successfully implemented a lightweight file system layer running on top of our isolated PIO ATA driver!

🚀 Key Features & Architectural Changes:

• Simple FAT-like File System: Initialized file system indexing structures, supporting basic directory listings and file metadata management (kernel.txt).
• ATA Driver Integration: Seamless communication between the storage layer and sector-level read operations.
• Persistent Architecture: Maintained stability across 4-level memory paging, cooperative async task executor, and Ring 0 -> Ring 3 privilege transitions.

🛠 Tech Stack Involved:

• Rust Nightly (no_std environment)
• x86_64 architecture memory mapping & storage block abstractions
• Inline assembly & asynchronous task scheduling

v0.2.0 - User Space & Hardware Privilege Isolation.

Daxo OS v0.2.0 - Milestone: Ring 3 Transition & Memory Protection

We have successfully implemented the foundation for User Space isolation and CPU privilege ring switching!

🚀 Key Features & Architectural Changes:

• Hardware Privilege Rings (Ring 0 -> Ring 3): Configured GDT (Global Descriptor Table) and TSS (Task State Segment) to support user-mode execution.
• Safe Context Switching: Implemented standard iretq assembly stack framing inside jump_to_user_space to securely drop CPU privileges.
• Memory Paging Security: Configured custom memory mapping using PageTableFlags::USER_ACCESSIBLE to safely isolate kernel-space memory from user-space execution blocks.
• Architecture Integrity: Fully resolved E0609 compile-time errors and exposed the Selectors structure for future process manager integration.

🛠 Tech Stack Involved:

• Rust Nightly (no_std environment)
• x86_64 architecture registers manipulation
• Inline assembly (core::arch::asm!)

Daxo OS v0.1.0 - First Successful Boot & ATA Driver

• VGA text mode display initialized.
• Custom ASCII art logo rendered on startup.
• Dynamic memory heap allocation implemented.
• Isolated PIO ATA Hard Drive Driver tested successfully (LBA 0 read validation).
• Async cooperative multitasking executor active.