EECS 1012 Study Guide - Fall 2018, Comprehensive Midterm Notes - Microsoft Windows, Operating System, Unix

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EECS 1012
MIDTERM EXAM
STUDY GUIDE
Fall 2018
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EECS 1012 Lecture 1 Notes
Introduction
Mounted manually
Flash drives, CDs, and DVDs are mounted automatically when they are inserted into the
drive.
Other devices must be mounted manually.
On older UNIX systems, all directories are mounted manually.
Thus, it is necessary for the user to issue a MOUNT command when a CD is changed on a
traditional UNIX workstation.
The mount point also depends on the system. On a Macintosh, all volumes are mounted
on the desktop
On UNIX and Linux systems, a volume can be mounted anywhere on the directory
structure.
The Linux file system design allows the mounting of multiple file system types for
transparent access across partitions and, even, across networks.
It also offers automatic mounting similar to that of the Macintosh.
An alternative file management model is implemented on the Sun Solaris 10 operating
system.
Solaris 10 is a UNIX-based system intended for use in medium to large computer
installations.
This model views disk storage as a single storage pool.
The storage pool can be shared by multiple file systems, but allocation of file space is
controlled by a single file manager.
A major feature of this organization is that disks can be added to the pool dynamically as
additional storage is required without modifying the file structure as viewed by the
users.
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Because data can easily be stored by the file management system in multiple locations,
the use of RAID drives, data backup, and data integrity measures can be built into the
system as routine operations, handled invisibly by the system.
Data and programs will also naturally spread fairly evenly over all of the available
physical devices, resulting in faster average access times, especially in systems with
heavy I/O requirements.
It is necessary for the user to issue a MOUNT command when a CD is changed on a
traditional UNIX workstation.
The mount point also depends on the system. On a Macintosh, all volumes are mounted
on the desktop
On UNIX and Linux systems, a volume can be mounted anywhere on the directory
structure.
The Linux file system design allows the mounting of multiple file system types for
transparent access across partitions and, even, across networks.
It also offers automatic mounting similar to that of the Macintosh.
An alternative file management model is implemented on the Sun Solaris 10 operating
system.
Solaris 10 is a UNIX-based system intended for use in medium to large computer
installations.
This model views disk storage as a single storage pool.
The storage pool can be shared by multiple file systems, but allocation of file space is
controlled by a single file manager.
A major feature of this organization is that disks can be added to the pool dynamically as
additional storage is required without modifying the file structure as viewed by the
users.
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EECS 1012 Full Course Notes
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EECS 1012 Full Course Notes
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Document Summary

It is necessary for the user to issue a mount command when a cd is changed on a traditional unix workstation: the mount point also depends on the system. The directory structure: the storage pool approach, although the storage pool design concept is recent, it was released by sun to the open source community. It has already been adapted for the freebsd operating system and partially adapted for. Single-level or flat directory: the simplest directory structure is just a list. Implementation of a single-level directory system is simple: however, as the directory grows, the list will expand beyond its original space allocation and it will be necessary for the system to allocate additional space. In this illustration, two files, autoexec. bat and config. sys, are found in the root directory: the tree structure is characterized by a root directory, from which all other directories stem.

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