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#OSdev

Today I will design my very own file system ddosfs. My primary design goal is that it should be as easy as possible to implement in 16bit x86 Assembly. The reason is I want to use it for my own operating system D-DOS. So all the integers are 16 bit and the block size is 512 byte to be compatible with all the low-level BIOS system calls. My file system is going to be based on the SimpleFS by the University of Note Dame, for which I've obtained a license. Their file system is in turn based on the Unix file system UFS but it does not have support for file names or directories so I have added that myself into ddosfs. In this episode we will go through all the design considerations and also describe the Api for the disk emulator that I will build. We will also go through the filesystem Api as well as all data structures and the file system itself. This is a self-contained Ep02 of the series on how to create your own MS-DOS operating system. #filesystem #programming #coders #osdev Become a channel member and get several benefits. Check out:    / @dr-jonas-birch   References Ep01 Coding your own MS-DOS operating system    • #OSdev 01 Coding your own MS-DOS operating...   Table of Contents 00:00:00 Specification 00:03:56 High level view 00:06:15 The superblock 00:11:17 Inodes 00:21:39 Disk emulator 00:26:25 File system Api