Unix permissions, POSIX Access Control Lists (ACL)
Transparent compression
No (Available through patches)
Transparent encryption
No
Other
Supported operating systems
Linux, BSD,[1][2] ReactOS,[3] Windows (through an IFS), macOS (through FUSE), HelenOS,[4] RIOT,[5] Zephyr[6]
ext2, or second extended file system, is a file system for the Linux kernel. It was initially designed by French software developer Rémy Card as a replacement for the extended file system (ext). Having been designed according to the same principles as the Berkeley Fast File System from BSD, it was the first commercial-grade filesystem for Linux.[7]
The canonical implementation of ext2 is the "ext2fs" filesystem driver in the Linux kernel. Other implementations (of varying quality and completeness) exist in GNU Hurd,[8] MINIX 3,[9][10] some BSD kernels,[11][12][13] in MiNT,[14] Haiku[15] and as third-party Microsoft Windows[16] and macOS (via FUSE) drivers. This driver was deprecated in Linux version 6.9 in favor of the ext4 driver, as the ext4 driver works with ext2 filesystems.[17]
ext2 was the default filesystem in several Linux distributions, including Debian and Red Hat Linux, until supplanted by ext3, which is almost completely compatible with ext2 and is a journaling file system. ext2 is still the filesystem of choice for flash-based storage media (such as SD cards and USB flash drives)[citation needed] because its lack of a journal increases performance and minimizes the number of writes, and flash devices can endure a limited number of write cycles. Since 2009,[18] the Linux kernel supports a journal-less mode of ext4 which provides benefits not found with ext2, such as larger file and volume sizes.[19]
^"Chapter 8. Disks, File Systems, and Boot Loaders". www.freebsd.org. Retrieved 11 April 2018.
^"ext2fs(5)". www.freebsd.org. Retrieved 11 April 2018.
^"ReactOS 0.4.2 Released". reactos.org. Retrieved 17 August 2016.
^"HelenOS Wiki: Ext4fs". www.helenos.com. Retrieved 6 November 2023.
^"pkg/lwext4: add lightweight implementation of the ext2/3/4 filesystem". www.github.com. Retrieved 6 November 2023.
^"subsys: fs: Implementation of ext2 file system". www.github.com. Retrieved 6 November 2023.
^Mauerer, Wolfgang (2010). Professional Linux Kernel Architecture. John Wiley & Sons. ISBN 9781118079911.
^"GNU Hurd/ hurd/ translator/ ext2fs". GNU Hurd. Retrieved 2024-02-10.
ext2, or second extended file system, is a file system for the Linux kernel. It was initially designed by French software developer Rémy Card as a replacement...
EXT2 can refer to: EXT2 (gene), a human gene ext2, a file system for the Linux kernel This disambiguation page lists articles associated with the same...
distributions. Stephen Tweedie first revealed that he was working on extending ext2 in Journaling the Linux ext2fs Filesystem in a 1998 paper, and later in a...
an autosomal dominant inherited disease. Germ line mutations in EXT1 and EXT2 genes located on chromosomes 8 and 11 have been associated with the cause...
it was superseded by both ext2 and Xiafs, which competed for a time, but ext2 won because of its long-term viability: ext2 remedied issues with ext, such...
Google announced that it would upgrade its storage infrastructure from ext2 to ext4. On 14 December 2010, Google also announced it would use ext4, instead...
Ext2Fsd (short for Ext2 File System Driver) is a free Installable File System driver written in C for the Microsoft Windows operating system family. It...
(sometimes called the e2fs programs) is a set of utilities for maintaining the ext2, ext3 and ext4 file systems. Since those file systems are often the default...
allowed developers to dynamically add a new bootable filesystem, as the ext2 driver for OS/2 demonstrated. CD-ROM filesystem driver (ISO 9660) was added...
fstab (after file systems table) is a system file commonly found in the directory /etc on Unix and Unix-like computer systems. In Linux, it is part of...
used in ext4 in the Linux 3.x.x kernel series. ext2 HTree indexes were originally developed for ext2 but the patch never made it to the official branch...
creating a copy of the whole ext2/3/4 metadata, while the Btrfs files simply point to the same blocks used by the ext2/3/4 files. This makes the bulk...
Retrieved December 18, 2011. only i686 CPU Windows can read and write with Ext2 and Ext3 file systems only when a driver from FS-driver or Ext2Fsd is installed...
quickly developed: ext2 and Xiafs. The two file systems were included in the standard kernel in December 1993 (Linux 0.99.15). ext2 and Xiafs had the same...
file system to an ext2 file system, a new ext2 file system is created. Then the data from the FAT32 file system is copied to the ext2 one, and the old...
Protect Home Office Yes No Yes Yes (64 MB) No Yes Yes FAT32, NTFS, HFS+, APFS, ext2, ext3, ext4 and ReiserFS Yes Yes Yes Trialware AOMEI Yes No No No No Yes...
planned support for NTFS, ext2 or exFAT, but there are several external third-party drivers available for that purpose. To access ext2 file systems, LTOOLS...
files of the same name. As of version 1.5.3 it can also recover files from Ext2, Ext3 and Ext4 file systems of Linux. As with other file recovery programs...
disc, a small partition on a local disk (a boot partition, usually using ext2 or FAT file systems), or a TFTP server (on systems that can boot from Ethernet)...
allocation is tracked by free space bitmaps in fixed locations. By contrast, ext2 and other Berkeley FFS-like file systems of that time simply used a fixed...
work on filesystems. After becoming involved with the development of the ext2 filesystem working on performance issues, he led the development of the ext3...
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