![]() Each container can contain logical volumes that share the space within their container. ![]() APFS uses the GPT partitioning scheme, with the top-level partitions being known as Containers. The Apple File System (APFS) became the standard file system for macOS High Sierra (10.13) and newer as of 2017.Although our course text makes the specious claim that it cannot be used for HDD, this is false there are use cases for which APFS is not ideal, of course, but in general, many Mac users can and do use APFS on mechanical hard disk drives on a routine basis. Features include backward compatibility with previous file systems, large file system capability (up to one exbibyte), file extents, persistent and delayed allocation, unlimited subdirectories, journaling and metadata checksums, improved timestamping, transparent encryption, and faster file system checking (Wikipedia, 2021 and EC-Council, 2021). ![]() The Fourth Extended File System (ext4), the latest stable evolution of the ext family of journaled file systems, was merged into the stable Linux 2.6.28 kernel in 2008. The MFT references the special metafiles (for example, $Volume is information about that volume, $MFT indexes all files, $MFTMirr is a backup of the $MFT, $LogFile implements journaling and logging, $VBR references the volume boot record, and so on) (Wikipedia, 2021). A volume begins with a volume boot record (VBR) which then references the master file table (MFT). ![]() Self-healing NTFS was also introduced in 2008 (Gerend, 2020). “The goals of NTFS are to provide: “Reliability, which is especially desirable for high-end systems and file servers, a platform for added functionality” and “support POSIX requirements” (Microsoft: Deland-Han, 2020). NTFS, the New Technology File System, was developed by Microsoft beginning in 1993 to eventually become the native file system for the Windows family of operating systems and to provide security and reliability features that had been lacking in the previously dominant File Allocation Table (FAT) filesystems. ![]() A forensic investigator needs to be prepared to extract digital evidence from any of these formats. All three operating systems also support variations of FAT as well as the most common CD, DVD, and tape formats. Back when the dinosaurs roamed the earth, I personally used TOPS-10, RT-11, CP/M, the original FAT, Apple and Commodore DOSs (as well as TRS CAS and TRSDOS which are not even listed by Wikipedia), and I have used many other file systems since.Ī digital forensic investigator is likely to encounter the most common file systems currently in use which are NTFS for Windows systems, ext4 for Linux systems, and APFS for macOS systems. The objective for this assignment is to “ Compare and contrast various file systems of Windows, Linux, and Mac operating systems with a suitable example each.”Ĭomparison of File Systems (Wikipedia, 2012) lists 102 different file systems that have been in production use on widely-used computing platforms since 1964. File systems of Windows, Linux, and Mac operating systems ![]()
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