From the course: Operating System Forensics
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Linux file systems
- [Instructor] Linux uses a file system called the extensible file system, or ext. Ext has been evolving since its creation in 1992 and its latest version is ext4. Unix existed well before Linux and ext file systems build on Unix file system design concepts. Just like its cousin Unix, Linux treats everything as a file, including directories and devices like printers. On a Linux file system a directory is simply another file that contains information on what files exist in the same container. In Linux a superblock stores details on the configuration of its file system. It keeps track of the locations of the critical data structures of the file system and their sizes. Superblock entries include the total number of free blocks and the size of each block. Ext uses blocks and block groups while Windows-based file systems rely on clusters. Block groups are a set of continuous blocks and are necessary to enhance the performance of the ext file system. Block groups attempt to keep fragments…
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