Storage devices

Types of HDD

Types of Mobile HDD

Partition Series

FAT

NTFS

Raid

Linux

Other Parts

Operating Systems

Windows

Other operating systems

Other

File Systems

  • The logical structure that has been created on the hard disk is supported by means of operating system. The file system itself presents the information on the disk as an ensemble of files and folders.

    From the user's point of view a file is a unit of storage of logically connected information: texts, graphics, sound. As for data storage organization, a file is a chain of connected clusters. A cluster is a unit of several sectors. (Sectors are characteristic for file systems supported by various versions of Windows).

    Operating systems support file systems on hard disks (or disk partitions) by allowing to create, copy, and delete files and folders.

    At present, the most widely spread file systems for PCs are the following two:
    • FAT (File Allocation Table) for DOS, OS/2, Windows 95/98/Me/NT/2000/XP
    • NTFS (Windows NT File System) for Windows NT/2000/XP
    However, there are many more other file systems. Linux operating system, which is now gaining popularity, widely uses two file systems:
    • Ext2 is a file system for end-users' PCs
    • ReiserFS is a more secure (with respect to data integrity) file system that is used on data servers
    For details on file systems see Appendix C
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