The field after the file system type lists the different options for mounting the file system. Linux Virtual Memory, POSIX shared memory maintenance access (kernel interface file system). Unix 98 Pseudo Terminals (ttys, kernel interface file system). Used by operating system for processes (kernel support file system). NFS file system for mounting partitions from remote systems.
#Fstab defaults windows#
Windows NT, Windows XP, and Windows 2000 file systems (read-only access, write access is experimental and dangerous).įile system for OS/2 high-performance partitions. Does not have journaling.įile system for MS-DOS partitions (16-bit).įile system for Windows 95, 98, and Millennium partitions (32-bit). Older standard Linux file system supporting long filenames and large file sizes. Standard Linux file system supporting long filenames and large file sizes. Minux file systems (filenames are limited to 30 characters).Įarlier version of Linux file system, no longer in use. dev/fd0 /mnt/floppy auto defaults,noauto 0 0 Table 30-7: File System TypesĪttempts to detect the file system type automatically. With this option, the type of file system formatted on the floppy disk is detected automatically, and the appropriate file system type is used. For this reason, the file system type specified for the floppy device is auto. For example, you may want to read a Windows-formatted floppy disk at one time and a Linux-formatted floppy disk at another time. The file system type for a floppy may differ depending on the disk you are trying to mount. The following example shows a LABEL entry for the hard disk partition, where the label name is /: This entry is mounted at the root directory, /, and has a file type of ext3: The next example shows an entry for the main Linux hard disk partition. The type for a standard Linux hard disk partition is ext3. Table 30-7 provides a list of all the different types you can mount. The third field is the type of file system being mounted. These are empty directories to be used for file systems, such as /dev/floppy. The next field is the directory in your file structure where you want the file system on this device to be attached. A label is specified by assigning the label name to the tag LABEL, as in LABEL=/ for an ext2 root partition. A device name usually begins with /dev, such as /dev/hda3 for the third hard disk partition. This entry can be either a device name or an ext2 or ext3 file system label. The first field is the name of the file system to be mounted. These are described as the device, mountpoint, file system type, options, dump, and fsck fields, arranged in the sequence shown here: You can do this by directly and carefully editing the /etc/fstab file to type in a new entry.Īn entry in an fstab file contains several fields, each separated from the next by a space or tab. To have Linux automatically mount the file system on your new hard disk partition, you only need to add its name to the fstab file. Otherwise, you must mount and unmount the partition explicitly each time you boot up and shut down your system. For example, when you add a new hard disk partition to your Linux system, you most likely want to have it automatically mounted on startup, and then unmounted when you shut down. All the mount information is already in the /etc/fstab file. This feature is what allows mount utilities on GNOME or KDE to enable you to mount a file system simply by clicking a window icon. You needn't enter this information as arguments to a mount command as you otherwise must.
For others, you can specify configuration information, such as mountpoints and access permissions, which can be automatically used whenever you mount a file system. Using entries in this file, you can have certain file systems automatically mounted whenever your system boots. Although you can mount a file system directly with only a mount command, you can simplify the process by placing mount information in the /etc/fstab configuration file. Mounting File Systems Automatically: /etc/fstabįile systems are mounted using the mount command, described in the next section.
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