Understanding Hard Disk Management On The Macintosh

spindle - "":--'--....1 read/write head - - - - - ' head arm--------~ Understanding Hard Disk Management on the Macintosh Management on the Macintosh® J. RUSSELL ROBERTS Cover design by Thomas Ingalls + Associates Cover photography by Michael Lamotte Series Design by Julie Bilski Technical drawings by jeff Giese Appleshare, Disk First Aid, Finder, Find File, Font/DA Mover, HD Backup, Hypercard, ImageWriter, LaserWriter, LocalTalk, Macintosh, MacroMaker, MacWrite, MultiFinder, PrintMonitor, ResEdit, Switcher, Teach Text and Virus Rx are trademarks of Apple Computer, Inc. Bernoulli Box is a trademark of Iomega Corp. BlockCrypt, DES, Sentinel and SuperCrypt are trademarks of SuperMac Technologies, Inc. Buick and Chevrolet are trademarks of General Motors Corp. Bus-Line is a trademark of Flavors Technology, Inc. Chrysler is a trademark of Chrysler Corporation. Copy II and MacTools are trademarks of Central Point Software. dBASE III is a registered trademark of Ashton-Tate. DiskQuick is a trademark ofldeaform, Inc. DiskTop and QuicKeys are trademarks of CE Software. Excel, Microsoft Word, MS-DOS, and OS/2 are trademarks of Microsoft Corporation. GOfer is a trademark of Microlytics, Inc. HD Tune Up and Symantec Utilities for the Macintosh (SUM) are trademarks ofSymantec Corporation. IBM is a registered trademark and Token Ring is a trademark of International Business Machines Corporation. Interferon is a trademark of Robert J. Woodhead. Lotus 1-2-3 is a trademark of Lotus Development Corporation. MacDraw and MacPaint are trademarks of Claris, Inc. The Muzzle is a trademark ofErgotron, Inc. NuBus is a trademark of Texas Instruments, Inc. Packlt is a trademark of Harry R. Chesley. PageMaker is a registered trademark of Aldus Corporation. PhoneNET is a trademark of Farallon Computing. PostScript is a trademark of Adobe Systems, Inc. Stufflt is a trademark of Raymond Lau. Suitcase is a trademark of Fifth Generation Systems. SuperPaint is a trademark of Silicon Beach Software. TOPS is a trademark ofTOPS, a division of Sun Microsystems, Inc. UNIX is a trademark of AT&T Information Systems. WordPerfect 5 is a registered trademark of WordPerfect Corporation. WriteNow is a trademark of Airus, Inc. SYBEX is a registered trademark of SYBEX Inc. SYBEX is not affiliated with any manufacturer. Every effort has been made to supply complete and accurate information. However, SYBEX assumes no responsibility for its use, nor for any infringements of patents or other rights of third parties which would result. Copyright©1989 SYBEX Inc., 2021 Challenger Drive #100, Alameda, CA 94501. World rights reserved. No part of this publication may be stored in a retrieval system, transmitted, or reproduced in any way, including but not limited to photocopy, photograph, magnetic or other record, without the prior agreement and written permission of the publisher. Library of Congress Card Number: 89-80004 ISBN 0-89588-579-4 Manufactured …