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Summer 2016 Intermediate Computer Class Lesson 3 Computer File Systems File Explorer

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SUMMER 2016 INTERMEDIATE COMPUTER CLASS LESSON 3 COMPUTER FILE SYSTEMS FILE EXPLORER WHAT YOU WILL LEARN IN THIS LESSON: WHAT A FILE SYSTEM IS WHERE FILE SYSTEMS RESIDE WHAT A FILE IS WHAT A FILE NAME IS WHAT A FOLDER IS WHAT A FILE PATHNAME IS HOW TO USE WINDOWS EXPLORER TO: • FIND A FILE (PROGRAM OR DATA) • DELETE FILES • COPY FILES • MOVE FILES • RENAME FILES • CREATE FOLDERS • CREATE DESKTOP SHORTCUTS WHAT IS A FILE SYSTEM? A file system is a collection of files, folders, directories and associated pointer data, security data and other information necessary to manage the files. WHAT ARE COMMON FILE SYSTEMS? • NTFS (NEW TECHNOLOGY FILE SYSTEM) WINDOWS NT, XP, VISTA, WINDOWS 7, WINDOWS 10) • FAT16 (FILE ALLOCATION TABLE 16 BIT) • FAT32 (FILE ALLOCATION TABLE 32 BIT) • ISO 9660 (INTERNATIONAL STANDARDS ORGANIZATION) AKA CDFS FILE SYSTEMS RESIDE ON: Common mass storage devices on personal computers: Disk drives (hard disk, fixed disk consisting of one or more rotating platters, rotating at up to 7200 rpm) the primary disk drive in a personal computer, usually named the C: drive, contains the operating system, most programs and data. Disk drives in laptops are usually 2.5 inches in diameter, in desktops 3.5 inches in diameter. Disk drives in new computers typically contain 250 – 1000 GB (gigabyte - 1 billion bytes, 1000GB is also known as 1TB terabytes) These devices are non-volatile (retain contents when power is removed). Flash drives memory made of transistors on an integrated circuit device. Flash drives are also non-volatile CD ROMs - compact disk used for data and music DVD – digital versatile disk Cameras - digital cameras with flash drive storage Network drives – disk drives on other computers which have granted permission to access to all or part of a drive. DRIVE C: (ROOT DIRECTORY) FOLDER A FOLDER C FILE B FILE A1 FILE A1 FOLDER B FILE A FILE A2 FILE A2 FILE A3 FILE A3 FILE A1 FILE A4 FILE A4 FILE A2 FILE A3 FOLDER B1 WHAT IS A FOLDER? A folder is a container in a file system that contains files and folders. Folders are used to organize the information that is stored on the storage device. Folders are also called directories. WHAT IS A FILE? A file is a collection of sequential bytes of data. A file may contain: • PROGRAM(S) • DATA • MUSIC • PICTURES • MOVIES, etc. Application programs are executable code that perform useful work for the user. Examples are – Windows Explorer, Internet Explorer, Wordpad, Turbo Tax, etc. An application program resides on a disk drive as one or more files in a folder on the disk drive. Data files contain information that is useful and of value to the user of the personal computer e.g. text documents, pictures, financial data, (stock, income tax data, bank account, etc.) WHERE PROGRAMS AND DATA ARE STORED Programs and data files are stored on mass storage devices . Examples of these devices are: C: Drive – a hard disk drive that is the primary mass storage device on a personal computer. The C: drive holds the operating system, application programs and user data. CD/DVD Drive typically the D: drive. This drive accepts removable media (CD or DVD). Data is written to the media by a special burn process. External Disk Drive – these drives are identical to the internal drive C: and plug in to a USB port. The drive letter assignment will vary depending on the configuration of the computer. Flash drive (thumbnail) – Semiconductor memory that plugs into a USB port. The memory is non-volatile, I.e. it retains the contents when power is removed. TYPES OF FILE SYSTEMS Windows can manage storage devices with the following File System Types: NTFS – New Technology File System, the standard file system on the C: drive FAT16 and FAT32 – File Allocation Table (16 bit or 32 bit) FAT 32 is standard on flash drives CDFS – Compact Disk File System or ISO9660 standard file system for audio cd's UDF – Universal Disk Format (also ISO9660) standard file system for DVD's FIXED DISK STRUCTURE Assume a 1 Terabyte Drive (1000 Gigabytes): Master Partition 1 Partition 2 Partition 3 Partition 4 Boot Record Windows LINUX Hidden NTFS or (Windows ? FAT backup) PARTITION 1 Operating system Filenames, User data, Empty Folders programs space Pointers to data Operating system Fragmented Disk Memory space Now open File Explorer: NAVIGATION CONTENTS PREVIEW PANE PANE PANE The Navigation pane is used to find the location on the device that contains the end objective of your search. The Contents pane shows the contents of the highlighted item in the Navigation column. The Preview pane shows a preview of the item selected in the Contents pane. In the Navigation Pane the right pointing arrows to the left of the items indicate that something is contained in that named item. You can expand the item by left clicking on the arrow. Under This PC there are six folders and the C: drive. The right pointing arrows indicate each contains additional items. If you expand each one you will find that the Music, Pictures, Documents, Downloads and Videos are Libraries just as in Windows 7. Under Users there is a Folder for each User Account in the system. Each folder is protected for the account that it belongs to. For example, from the Intermediate account, you cannot access information in the Beginners account or one of the Administrator accounts. To share data with other users, use a folder that is in the root directory of the C: Drive. With File Explorer we can copy, delete and move files. Simply right click on the file name and select the Cut, Copy, Delete, or Rename options. These operations work regardless of the device that the file is copied from or to, unless the destination device is write protected. FILE EXPLORER File Explorer has many features which add ease of use and additional function. The top bar on the pane is the Title bar and contains the name of the element selected in the Navigation pane. Below the Title Bar is the Menu Bar which contains menu items that were on the Windows Explorer screen. The Home tab contains a number of file and folder manipulations available to the user such as Move, Copy, Paste, Rename, Delete, etc. The Share tab functions provides means to output files to other devices, print, zip, email files and folders. The View tab provides the means to change the format of the File Explorer display. Features such as additional columns containing the Date Created, file name extensions, etc. .
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