File system mounted or not Post: 302923124

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Operating Systems Linux Red Hat File system mounted or not Post 302923124 by Aia on Thursday 30th of October 2014 03:15:36 PM

10-30-2014

Registered User

Quote:

Originally Posted by Maddy123

Thanks Aia.

Why is it necessary a file system should be mounted. Can you explain ?

Regards,
Maddy

In order to understand mounting points, you need to understand and associate it with these two concepts: partitions and formatting.
Partitions are the logical division that you can impose on a single disk or storage device. Formatting is the prearranged organizational structure imposed on the data written to that partition.

In order to access this complex combination abstraction, an interface or point of access has been created, using directories. That's mounting.

Now when you see:

Code:

/dev/sda1 on /boot type ext4 (rw)

You can identify the partition 1 on disk sda or first partition on first disk: /dev/sda1 mounted on the directory /boot and formatted with the filesystem ext4 for reading and writting (rw)

---------- Post updated at 01:15 PM ---------- Previous update was at 01:10 PM ----------

If you still are not sure, think about a house. That's a disk.
A house usually have many rooms or divisions. That's partitions.
A bathroom is different that a kitchen room or a bedroom. That's formatting.
You access these rooms, usually, via an entry door or doorway. That's mounting.

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LEARN ABOUT MINIX

fstab

FSTAB(5)							File Formats Manual							  FSTAB(5)

NAME

       fstab, mtab - list of file systems to mount, mounted file system table.

SYNOPSIS

       /etc/fstab

       /etc/mtab

DESCRIPTION

       /etc/fstab  is  a table of file system to mount at boot time, /etc/mtab is a table of currently mounted file systems as maintained by mount
       and umount.

       /etc/fstab is not read by mount as it should be.  It is instead a simple shell script listing the three devices that Minix needs  to  oper-
       ate:   The device names of the root file system, the temporary (scratch) file system, and the file system for /usr.  Of these only the /usr
       file system is mounted in /etc/rc, the scratch file system is there for the system administrator to test new kernels,  or  as  a  temporary
       file system.

       /etc/mtab contains lines of four fields.  The layout is:

	      device	directory    type    options

       These fields may be explained as follows:

       device
	      A block special device.

       directory
	      Mount point.

       type
	      Either 1, or 2, indicating a V1 or V2 file system.

       options
	      Either ro, or rw, indicating a read-only or read-write mounted file system.

FILES

       /etc/fstab     Shell script naming three important file systems.

       /etc/mtab      List of mounted file systems.

SEE ALSO

       printroot(8), mount(1), fsck(1), mkfs(1).

BUGS

       /etc/fstab is a joke.

AUTHOR

       Kees J. Bot (kjb@cs.vu.nl)

																	  FSTAB(5)

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