Avidnews System Preparation Guide • March 1998
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Wikipedia: Design of the FAT File System
Design of the FAT file system A FAT file system is a specific type of computer file system architecture and FAT a family of industry-standard file systems utilizing it. Developer(s) Microsoft, SCP, IBM, [3] The FAT file system is a legacy file system which is simple and robust. It Compaq, Digital offers good performance even in very light-weight implementations, but Research, Novell, cannot deliver the same performance, reliability and scalability as some Caldera modern file systems. It is, however, supported for compatibility reasons by Full name File Allocation Table: nearly all currently developed operating systems for personal computers and FAT12 (12- many home computers, mobile devices and embedded systems, and thus is a bit version), well suited format for data exchange between computers and devices of almost FAT16 (16- any type and age from 1981 through the present. bit versions), Originally designed in 1977 for use on floppy disks, FAT was soon adapted and FAT32 (32-bit version used almost universally on hard disks throughout the DOS and Windows 9x with 28 bits used), eras for two decades. Today, FAT file systems are still commonly found on exFAT (64- floppy disks, USB sticks, flash and other solid-state memory cards and bit versions) modules, and many portable and embedded devices. DCF implements FAT as Introduced 1977 (Standalone the standard file system for digital cameras since 1998.[4] FAT is also utilized Disk BASIC-80) for the EFI system partition (partition type 0xEF) in the boot stage of EFI- FAT12: August 1980 compliant computers. (SCP QDOS) FAT16: August 1984 For floppy disks, FAT has been standardized as ECMA-107[5] and (IBM PC DOS 3.0) ISO/IEC 9293:1994[6] (superseding ISO 9293:1987[7]). -
Technology Assessment: Methods for Measuring the Level of Computer Security
AlllDb 33MMn Computer Science National Bureau and Technology of Standards NBs NBS Special Publication 500-133 PUBLICATIONS Technology Assessment: Methods for Measuring the Level of Connputer Security William Neugent, John Gilligan, ance Hoffman, and Zella G. Ruthberg 100, ' .1157 500-133 1985 . ] I he National Bureau of Standards' was established by an act of Congress on March 3, 1901. The Bureau's overall goal is to strengthen and advance the nation's science and technology and facilitate their effective application for public benefit. To this end, the Bureau conducts research and provides: (1) a basis for the nation's physical measurement system, (2) scientific and technological services for industry and government, (3) a technical basis for equity in trade, and (4) technical services to promote public safety. The Bureau's technical work is performed by the National Measurement Laboratory, the National Engineering Laboratory, the Institute for Computer Sciences and Technology, and the Institute for Materials Science and Engineering The National Measurement Laboratory Provides the national system of physical and chemical measurement; • Basic Standards^ coordinates the system with measurement systems of other nations and • Radiation Research furnishes essentiaJ services leading to accurate and uniform physical and • Chemical Physics chemical measurement throughout the Nation's scientific community, in- • Analytical Chemistry dustry, and commerce; provides advisory and research services to other Government agencies; conducts physical and -
File Allocation Table - Wikipedia, the Free Encyclopedia Page 1 of 22
File Allocation Table - Wikipedia, the free encyclopedia Page 1 of 22 File Allocation Table From Wikipedia, the free encyclopedia File Allocation Table (FAT) is a file system developed by Microsoft for MS-DOS and is the primary file system for consumer versions of Microsoft Windows up to and including Windows Me. FAT as it applies to flexible/floppy and optical disc cartridges (FAT12 and FAT16 without long filename support) has been standardized as ECMA-107 and ISO/IEC 9293. The file system is partially patented. The FAT file system is relatively uncomplicated, and is supported by virtually all existing operating systems for personal computers. This ubiquity makes it an ideal format for floppy disks and solid-state memory cards, and a convenient way of sharing data between disparate operating systems installed on the same computer (a dual boot environment). The most common implementations have a serious drawback in that when files are deleted and new files written to the media, directory fragments tend to become scattered over the entire disk, making reading and writing a slow process. Defragmentation is one solution to this, but is often a lengthy process in itself and has to be performed regularly to keep the FAT file system clean. Defragmentation should not be performed on solid-state memory cards since they wear down eventually. Contents 1 History 1.1 FAT12 1.2 Directories 1.3 Initial FAT16 1.4 Extended partition and logical drives 1.5 Final FAT16 1.6 Long File Names (VFAT, LFNs) 1.7 FAT32 1.8 Fragmentation 1.9 Third party -
Copyright © 1993, by the Author(S). All Rights Reserved
Copyright © 1993, by the author(s). All rights reserved. Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise, to republish, to post on servers or to redistribute to lists, requires prior specific permission. FILE SYSTEM PERFORMANCE AND TRANSACTION SUPPORT by Margo Hene Seltzer Memorandum No. UCB/ERL M93/1 7 January 1993 FILE SYSTEM PERFORMANCE AND TRANSACTION SUPPORT by Margo Ilene Seltzer Memorandum No. UCB/ERL M93/1 7 January 1993 ELECTRONICS RESEARCH LABORATORY College of Engineering University ofCalifornia, Berkeley 94720 FILE SYSTEM PERFORMANCE AND TRANSACTION SUPPORT by Margo Ilene Seltzer Memorandum No. UCB/ERL M93/1 7 January 1993 ELECTRONICS RESEARCH LABORATORY College ofEngineering University ofCalifornia, Berkeley 94720 Abstract File System Performance and Transaction Support by Margo Ilene Seltzer Doctor of Philosophy in Computer Science University ofCalifornia at Berkeley Professor Michael Stonebraker, Chair This thesis considers two related issues: the impact of disk layout on file system throughput and theintegration oftransaction support in file systems. Historic file system designs have optimized for reading, as read throughput was the I/O per formance bottleneck. Since increasing main-memory cache sizes effectively reduce disk read traffic [BAKER91], disk write performance has become the I/O performance bottleneck [OUST89]. This thesis presents both simulation and implementation analysis ofthe performance of read-optimized and write-optimized file systems. An example of a file system with a disk layout optimized for writing is a log-structured file system, where writes are bundled and written sequentially. -
OPERATING SYSTEM and APPLICATION SOFTWARE Unit – 1
OPERATING SYSTEM AND APPLICATION SOFTWARE Unit – 1 Introduction to OS- Distinction Between DOS and Windows- DOS – Internal Commands - Partitioning and Formatting HDD- Introduction to file system- different types file system- and Practical Partitioning and Formatting HDD Drive- Introduction to OS- Types OS- Installation Operating System and Application Stware. Ms fice- Tally and WinZip- Winrar Unit – 2 Repairing windows Operating System Console repairing and graphical repairing and Removing Application Stware’s - MS fice- Tally and WinZip- Winrar -.-Introduction the Stware- Different types the Stware- Difference between Systems stware’s and Application Stware- Third Party Stware - System stware - Overview all system stware - Operating system - I-O Manager – Assembler – Compiler – Linker – Loader. XP Edition Intro- Introduction to XP Pressional and its new Features- Understanding Workgroup and Domain- Upgrading earlier version Windows to XP. Unit- 3 VIRUS- Major Areas VIRUS Attacks- Types Viruses- Anti-Virus and Various Types Antivirus Packages and Tools - Multitasking – Multiprogramming - Time sharing – buffering – spooling - Process and thread management - Concept process and threads - Process states - process management - context switching - Interaction between processes and OS - Multithreading Unit- 4 Process states - process management - context switching - Interaction between processes and OS - Memory management - Memory partitioning – Swapping - Paging - Segmentation - virtual memory - Concepts- Overlays- Demand paging- Performance demand – Paging - Page replacement algorithm - Allocation algorithms Unit 5 File Systems - File concept - File support - Access methods - Allocation methods - Directory systems - File Protection - Free Space management- Understanding User Accounts - The Computer Management Snap-in- Setting Properties User Account- Enabling and Disabling Guest Accounts. 1 | P a g e UNIT - 1 Introduction to OS An operating system is a layer of software which takes care of technical aspects of a computer's operation. -
Operating Systems
DIGITAL NOTES ON OPERATING SYSTEMS B.TECH II YEAR - I SEM (2020-21) DEPARTMENT OF INFORMATION TECHNOLOGY MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) (Affiliated to JNTUH, Hyderabad, Approved by AICTE - Accredited by NBA & NAAC – ‘A’ Grade - ISO 9001:2015 Certified) Maisammaguda, Dhulapally (Post Via. Hakimpet), Secunderabad – 500100,Telangana State, INDIA. MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY DEPARTMENT OF INFORMATIONTECHNOLOGY SYLLABUS (R18A0504) OPERATING SYSTEM L T/P/D C II Year B.Tech IT-ISem 3 -/-/- 3 Objectives: Students will be able: To learn the mechanisms of OS to handle processes and threads and theircommunication To learn the mechanisms involved in memory management in contemporaryOS To gain knowledge on distributed operating system concepts that includes architecture, Mutual exclusion algorithms, deadlock detection algorithms and agreementprotocols To know the components and management aspects of concurrencymanagement UNIT ‐ I: Introduction: Concept of Operating Systems, Generations of Operating systems, Types of Operating Systems, OS Services, System Calls, Structure of an OS - Layered, Monolithic, Microkernel Operating Systems, Concept of Virtual Machine. Case study on UNIX and WINDOWS Operating System. UNIT ‐ II: Processes: Definition, Process Relationship, Different states of a Process, Process State transitions, Process Control Block (PCB), Context switching Thread: Definition, Various states, Benefits of threads, Types of threads, Concept of multithreads -
X·L2• a SERIOUS COMPUTER
A SERIOUS COMPUTER X·l2• IN A DESKTOP PACKAGE Multiprocessor Technology - Combination of 8, 16 and 32 bit types 1.0 Megabyte Memory- Insures no limitation on programs "Winchester" Disk System- Fast response, large storage capacity UniFiex · Operating System- The standard of comparison Hardware Floating Point - Unmatched speed in a small system Up to Three Terminals - Instant expansion • T r�demark uf Technical Synems c:;onsultanu SOUTHWEST TECHNICAL PRODUCTS CORPORATION 219 W. RHAPSODY SAN ANTONIO, TEXAS 78216 (512) 344-0241 Only Microware's OS-9 Operating System Covers the Entire 68000 Spectrum MICROWARE'S OS-9 UNIX ROM·BASED fi.OPPY..OISK BASED DID-lASED CONTROL PERSONAL INDUSTRIAL SYSTEMS COMPUTERS smEMS HAND-HELD HARDWAREiSOFT'MRE ..,._SCALE COMPUTERS DEVELOPMENT SYSTEMS ._....... IYIIIMI SMALL SYSTEMS LARIE SYSTEMS Is complicated software and expensive hardware VAX an d PDP-II mal-.c lt>ordinJtcd UnaxOS·l) ..ottw.tn• d w ptn keeping you back from Unix? Look mto 0$-ll the c Jo ent J rfc.J�Uft! orc.·rating �y�tcm fl'(lm Macr<w.arcthat giii('So8000 �y:.tt·m' SUPPORT FOR MODULAR SOFTWARE .a Unax-�tvlt• envan>nnwnt walh mulh ll"i� overhead .md - AN OS-9 EXCLUSIVE c<,mplt•\aiy. Ct,mprd,cn�I\C 'urp"rt 1<)1moduiM .,oilware put<. os.o •� wr�Jhlt•, delivers outstanding J .JheJd of II mulliplit� 0�-1.? anexpt'n'l\'t' anJ t-wncrJti.m otht•r upt•t.lhng.,y,ft'm!>. p<>rlormo�nl�' on .111y o,tzt• )y�ll'll1 1h(' OS-" £'Xt'tu llw b progrJtntTWr pnlliudt\'&lyand tnl'tnoryC'tial&Cn• y. -
I5/OS on a POWER Blade Read-Me First
Getting started with IBM i™ on an IBM Flex System™ compute node. Mike Schambureck ([email protected]) IBM i Lab Services,Rochester, MN October 2014 Getting Started with IBM i on an IBM PureFlex System Compute node 1 Table of Contents 1 Overview and Concepts ..................................................................................................................................... 5 1.1 IBM PureFlex System ...................................................................................................................................... 5 1.2 Chassis Overview ............................................................................................................................................ 5 1.3 Management interfaces ................................................................................................................................... 7 1.4 Logical Partitioning (LPAR) or Virtual Servers ............................................................................................. 7 1.5 Operating systems ........................................................................................................................................... 7 1.6 Overview of I/O concepts for IBM i on node ................................................................................................... 8 1.7 Review terminology ......................................................................................................................................... 9 1.8 Plan for necessary IP addresses................................................................................................................... -
PC5086 and PC5286 Guide to MS-DOS
! M I A I 1 4 : ; PC5086 and PC5286 t- 'j User Manual and 5- 1* . < Jj Guide to MS-DOS ; ? 1; v \ 5 J Ci ! 5 i 5 \ i ■ i ! / 0 \ > ( i If •!i r;;:-. life The products described in this manual and products for use with it are subject to continuous development and improvement. This manual is provided to you free of charge and is intended only to assist the reader in the use of the product. The information contained in this manual and literature provided with the product is given by AMSTRAD in good faith but may contain errors. AMSTRAD MAKES NO REPRESENTATION OR WARRANTY AND ACCEPTS NO CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY OR FITNESS FOR A PARTICULAR PURPOSE AND AMSTRAD ACCEPTS NO LIABILITY FOR ANY LOSS OR DAMAGE ARISING FROM THE USE OF ANY INFORMATION PROVIDED OR OMITTED. This manual may include technical inaccuracies or typographical errors. Changes are periodically made to the information contained herein; these changes will be incorporated in new editions of the publication. AMSTRAD may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time but does not undertake to notify customers of these changes. The products referred to herein are not designed and should not be used for, or in connection with, life critical functions or any activity in which an error or a fault may result in physical damage or injury to person(s) and AMSTRAD does not authorise such use. -
NRCS Release Notes V1.5
Avid Technology, Inc. iNEWS Newsroom Computer System Version 1.9.1 Release Notes This document includes hardware and software requirement changes, feature enhancements, a list of known problems and workarounds, references to other iNEWS newsroom computer system documents, and changes and errata to iNEWS printed documents. The iNEWS 1.9.1 is a limited, server only software release that will be used in conjunction with iNEWS client versions 1.5.1 and later. See release notes for iNEWS versions 1.5, 1.5.1, and 1.5.2 for additional information regarding fixes and enhancements made to iNEWS 1.5.x. Table of Contents Compatibility Issues.................................................................................................................................... 2 iNEWS 1.9.1 server .............................................................................................................................. 2 Console Multiplexor............................................................................................................................ 2 iNEWS 1.5.2 client ............................................................................................................................... 2 Fast Text Search 1.5 ............................................................................................................................. 2 ControlAir 1.0.5 (formerly BCS) ........................................................................................................ 2 iNEWS Newsroom Computer System Documentation ........................................................................ -
Hidden Programs in Windows XP
Hidden Programs in Windows XP Posted on May 17, 2007by abhishek2434 Below are the lists of some of the Hidden Programs in the Windows XP operating System. Go to start and select Run. There typing the command on right side of the list will open the application in the left side. SQL Client Configuration – cliconfg System Configuration Editor – sysedit System Configuration Utility – msconfig System File Checker Utility (Scan Immediately)- sfc /scannow System File Checker Utility (Scan Once At Next Boot)- sfc /scanonce System File Checker Utility (Scan On Every Boot) – sfc /scanboot System File Checker Utility (Return to Default Setting)- sfc /revert System File Checker Utility (Purge File Cache)- sfc /purgecache System File Checker Utility (Set Cache Size to size x)-sfc/cachesize=x System Information- msinfo32 System Properties – sysdm.cpl Task Manager – taskmgr TCP Tester – tcptest Telnet Client – telnet Tweak UI (if installed) – tweakui User Account Management- nusrmgr.cpl Utility Manager – utilman Windows Address Book – wab Windows Address Book Import Utility – wabmig Windows Backup Utility (if installed)- ntbackup Windows Explorer – explorer Windows Firewall- firewall.cpl Windows Magnifier- magnify Windows Management Infrastructure – wmimgmt.msc Windows Media Player – wmplayer Windows Messenger – msmsgs Windows Picture Import Wizard (need camera connected)- wiaacmgr Windows System Security Tool – syskey Windows Update Launches – wupdmgr Windows Version (to show which version of windows)- winver Windows XP Tour Wizard – tourstart Wordpad