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Everything about Coumputer Hard Disk This document outlines many basic concepts of hard disk partitioning. Include tips for using PowerQuest products ( a software company that produced utility software as PartitionMagic, Drive Image, BootMagic, VolumeManager and others. It was acquired by Symantec in 2003 ) and useful tips to manage hard disks, partitions, file systems ( FAT, or File Allocation Table, NTFS or New Technology File System, HPFS or High Performance File System, NetWare file system, Linux Ext2 and Linux Swap ) and operating systems. Different OSs ( operating systems ) use different file systems, so the type of logical formatting you apply depends on the OS you plan to install. Formatting your entire hard disk with one file system necessarily limits the number and types of OSs you can install on the disk. Luckily, there is a solution to this problem. Before a disk is logically formatted, it can be divided into partitions. Each partition can then be formatted with a different file system, allowing you to install multiple OSs. One hard disk may contain up to four primary partitions, or three primary partitions and one extended partition. The extended partition can then be further divided into any number of logical partitions. Contrariwise, a primary partition is a partition on a hard drive that can contain only one logical drive. An extended partition does not directly hold data. You must create logical partitions within the extended partition in order to store data. Once created, logical partitions must be logically formatted, but each can use a different file system. While the data in a primary partition can be accessed only by the OS installed on that partition, you can access data stored in a logical partition from multiple OSs installed in different primary or logical partitions, provided that the logical partition uses a file system that the OSs recognize.
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