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This project involved the development of a x86 64 bit operating system (SBUnix). It was developed in C and Assembly language. System was tested on QEMU which is a hosted hypervisor that performs hardware virtualization.The developed OS support for Context Switching, Memory management, File System, Terminal and Shell. System calls: COW fork, execvpe, sleep, malloc, exit,read, write, wait, waitpid,ls, ps, scanf etc. Memory management : 4 level Paging , virtual memory management in Ring 0 and Ring 3, Page-fault Handling etc. File-System : PCI bus and AHCI sata device controller interfacing and management, system calls (fread,fwrite, fseek, opendir, readir, mkdir) This project was undertaken as a part of CSE 506 Operating Systems course.
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