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  • bcachefs - A next generation, robust, high performance filesystem supporting CoW (Copy-on-write), compression, and encryption.
  • Cramfs - A memory and space sensitive compressed filesystem that supports random reading. It avoids the block device layer and tiny embedded systems with very tight memory constraints.
  • eCryptfs - The enterprise cryptographic filesystem for Linux.
  • efivarfs - a (U)EFI variable filesystem[1]
  • ext4 - The default, GPL licensed journaling filesystem for many Linux distributions.
  • FAT - The File Allocation Table (FAT) filesystem. Originally created for use with Microsoft Windows.
  • JFS - A GPL licensed, 64-bit Journaled File System (JFS) developed by IBM.[2]
  • Btrfs - A copy-on-write B-tree file system (Btrfs) with advanced features (an entirely open source licensed ZFS alternative).
  • NTFS - Microsoft Windows' New Technology File System (NTFS) (Windows' default filesystem).
  • Aufs - Advanced multi-layered unification file system (Aufs), formerly known as Another union file system.
  • OverlayFS - The only union-like filesystem built-in to the Linux kernel.
  • ReiserFS - Version 3 of the ReiserFS filesystem.
  • Reiser4 - Version 4 of ReiserFS filesystem. Currently not implemented in the mainline Linux kernel.
  • SquashFS - A compressed, read-only file system for Linux[3]
  • UDF - Universal Disk Format - needed for mounting some kind of .iso files
  • GFS2 - Global File System 2: A shared disk filesystem. Typically used in compute clusters.
  • UFS - The Unix File System (UFS) also called the Berkeley Fast File System.
  • XFS - A GPL licensed, 64-bit journaling filesystem created by Silicon Graphics.[4]
  • ZFS - A CDDL (non-GPL compatible) licensed, copy-on-write filesystem created by Sun Microsystems.[5]
  • F2FS - A Flash-Friendly File System (F2FS) created by Samsung for the Linux kernel.