PPT-Hard Disk Drives and UNIX File System

EEN 322 Systems Programming November 18th 2014 Hard Disk Drive HDD Attached to a computer by IO bus SATASCSI Host controller Disk controller Memorymapped IO ports Builtin cache on disk. The Hard Disk Overwrite function electroni cally overwrites data stored on the MFP hard drive using an algorithm specified by US Department of Defense Directive 520028M The data stored on the hard drive is created during copy print scan and fax oper 1. Lesson 3: Working with Storage Systems. storage systems. hard disk drives. optical drives. portable or removable storage devices. network drives. remote storage. © CCI Learning Solutions Inc.. 2. Overview. 2. UNIX. UNIX is . a multi-user . and multi-tasking operating system.. Multi-tasking: Multiple processes can run concurrently.. Multi-user: . different users can read mails, copy files, and print all at once.. Hugh Stroupe. December 12, 2013. What is a Hard Drive?. A . hard disk drive. (. HDD. )is . a data storage device used for storing and retrieving digital information using rapidly rotating disks (platters) coated with magnetic . Where do file systems fit in the OS?. File . control data structures. A common internal interface for file systems. The file system API. File Systems and the OS. . system calls. UNIX FS. DOS FS. CD FS. http://www.comp.nus.edu.sg/~cs1010/. Unit 11: UNIX I/O Redirection. UNIX I/O Redirection. Unit11 . - . 2. © NUS. Objective:. Learn how to use I/O redirection in UNIX to redirect input from a file and output to a file.. 2. . Hard drives store data optically, with lasers.. 3. . CDs store data on a single, spiral track.. 4. . Disk caching can improve performance.. 5. . Smart cards are usually used to transport large amounts of data from one PC to another.. nama sebuah sistem operasi yang asal mulanya dikembangkan pada laboratorium Bell, AT & T (Ken Thompson). Sistem Operasi adalah . perangkat lunak komputer yang mengatur dan mengendalikan operasi. Overview. In this chapter, you will learn how to:. Explain how hard drives work. Identify and explain the PATA and SATA hard drive interfaces. Describe how to protect data with RAID. Describe hard drive installation. Objectives. Learn about the technologies used inside a hard drive. Learn how a computer communicates with a hard drive. Learn how to select and install a hard drive. Learn about tape drives and floppy drives. 2. Introduction. Unix-like system is everywhere. Linux. Android for smartphones. Google Chrome OS for . Chromebook. Web servers. OS X for MacBook/iMac . etc. iOS for iPhone/iPad . etc. 3. Unix Shell. . Fundamental. . Commands. Ricky Patterson . –. UVA Library. Based on slides from . Turgut. Yilmaz . –. Istanbul . Teknik. University. 2. . What . We . Will Learn. T. he . fundamental. . commands. 2. Introduction. What is Unix?. An operation system (OS), similar to Windows, MacOS X. Why learn Unix?. Greatest Software Ever Written!!. http://www.informationweek.com/shared/printableArticle.jhtml?articleID=191901844. Chapter 8 Adding Disks Loops Run instructions again, and again, and again…. Check some condition If true, repeat 2 types of loops for loop while loop First, the variable used in loop condition must be initialized, then execution of the loop begins.