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Top Forums UNIX for Advanced & Expert Users how to find default file system Post 302310850 by Neo on Monday 27th of April 2009 08:26:53 AM
Old 04-27-2009
The "default file system" for Linux; in general, is ext2 or ext3.

From above:

Quote:
The ext3 or third extended filesystem is a journaled file system that is commonly used by the Linux kernel. It is the default file system for many popular Linux distributions.
Most people would use fdisk or mount to see what filesystems are used on a Linux installation.
 

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FILESYSTEMS(5)                                               Linux Programmer's Manual                                              FILESYSTEMS(5)

NAME
filesystems - Linux filesystem types: ext, ext2, ext3, ext4, hpfs, iso9660, JFS, minix, msdos, ncpfs nfs, ntfs, proc, Reiserfs, smb, sysv, umsdos, vfat, XFS, xiafs, DESCRIPTION
When, as is customary, the proc filesystem is mounted on /proc, you can find in the file /proc/filesystems which filesystems your kernel currently supports; see proc(5) for more details. If you need a currently unsupported filesystem, insert the corresponding module or recompile the kernel. In order to use a filesystem, you have to mount it; see mount(8). Below a short description of the available or historically available filesystems in the Linux kernel. See kernel documentation for a comprehensive description of all options and limitations. ext is an elaborate extension of the minix filesystem. It has been completely superseded by the second version of the extended filesystem (ext2) and has been removed from the kernel (in 2.1.21). ext2 is the high performance disk filesystem used by Linux for fixed disks as well as removable media. The second extended filesystem was designed as an extension of the extended filesystem (ext). See ext2 (5). ext3 is a journaling version of the ext2 filesystem. It is easy to switch back and forth between ext2 and ext3. See ext3 (5). ext4 is a set of upgrades to ext3 including substantial performance and reliability enhancements, plus large increases in volume, file, and directory size limits. See ext4 (5). hpfs is the High Performance Filesystem, used in OS/2. This filesystem is read-only under Linux due to the lack of available documentation. iso9660 is a CD-ROM filesystem type conforming to the ISO 9660 standard. High Sierra Linux supports High Sierra, the precursor to the ISO 9660 standard for CD-ROM filesystems. It is automatically recognized within the iso9660 filesystem support under Linux. Rock Ridge Linux also supports the System Use Sharing Protocol records specified by the Rock Ridge Interchange Protocol. They are used to further describe the files in the iso9660 filesystem to a UNIX host, and provide information such as long filenames, UID/GID, POSIX permissions, and devices. It is automatically recognized within the iso9660 filesystem support under Linux. JFS is a journaling filesystem, developed by IBM, that was integrated into Linux in kernel 2.4.24. minix is the filesystem used in the Minix operating system, the first to run under Linux. It has a number of shortcomings, including a 64 MB partition size limit, short filenames, and a single timestamp. It remains useful for floppies and RAM disks. msdos is the filesystem used by DOS, Windows, and some OS/2 computers. msdos filenames can be no longer than 8 characters, followed by an optional period and 3 character extension. ncpfs is a network filesystem that supports the NCP protocol, used by Novell NetWare. To use ncpfs, you need special programs, which can be found at <ftp://linux01.gwdg.de/pub/ncpfs>. nfs is the network filesystem used to access disks located on remote computers. ntfs replaces Microsoft Window's FAT filesystems (VFAT, FAT32). It has reliability, performance, and space-utilization enhancements plus features like ACLs, journaling, encryption, and so on. proc is a pseudo filesystem which is used as an interface to kernel data structures rather than reading and interpreting /dev/kmem. In particular, its files do not take disk space. See proc(5). Reiserfs is a journaling filesystem, designed by Hans Reiser, that was integrated into Linux in kernel 2.4.1. smb is a network filesystem that supports the SMB protocol, used by Windows for Workgroups, Windows NT, and Lan Manager. See <https://www.samba.org/samba/smbfs/>. sysv is an implementation of the SystemV/Coherent filesystem for Linux. It implements all of Xenix FS, SystemV/386 FS, and Coherent FS. umsdos is an extended DOS filesystem used by Linux. It adds capability for long filenames, UID/GID, POSIX permissions, and special files (devices, named pipes, etc.) under the DOS filesystem, without sacrificing compatibility with DOS. vfat is an extended FAT filesystem used by Microsoft Windows95 and Windows NT. vfat adds the capability to use long filenames under the MSDOS filesystem. XFS is a journaling filesystem, developed by SGI, that was integrated into Linux in kernel 2.4.20. xiafs was designed and implemented to be a stable, safe filesystem by extending the Minix filesystem code. It provides the basic most requested features without undue complexity. The xiafs filesystem is no longer actively developed or maintained. It was removed from the kernel in 2.1.21. SEE ALSO
fuse(4), btrfs(5), ext2(5), ext3(5), ext4(5), nfs(5), proc(5), tmpfs(5), fsck(8), mkfs(8), mount(8) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. Linux 2017-09-15 FILESYSTEMS(5)
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