User`s guide

Data Storage and Retrieval Chapter Four - Data Storage
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Chapter Four - Data
Storage
Data storage and retrieval are two of the most fundamental tasks you will perform
when working with your computer.
Data Storage and Retrieval
The TREK 2 is equipped with a 3.5" floppy disk drive (FDD) and a hard disk drive
(HDD). The hard disk drive is removable, allowing for easy upgrades. These two
types of drives and their associated circuitry comprise your computer’s main data
storage and retrieval system.
Floppy Disk Drive
Your TREK 2 features a removable high-density 3.5-inch floppy disk drive, or an
optional LS-120 (120MB) drive, module. The floppy disk drive interfaces with the
rest of the TREK 2’s system via a disk drive controller. The disk drive controller is
an integral part of the computer’s main board architecture. The disk drive transfers
data between the diskette and memory as requested by the system. The floppy
disk drive is designated drive A: by the operating system.
The floppy diskette is the most widely used data storage medium for transferring
data from one PC to another. The coated mylar disk is enclosed in a plastic case
that protects the disk from damage caused by scratches, bending, and dust.
Using Floppy Diskettes
1. Insert the diskette into the drive with the label side up. Most diskettes have an
arrow to indicate which end goes in first.
2. Slide the diskette all the way in until the Diskette Eject button pops out.
3. To eject the diskette, push the Diskette Eject button until the diskette pops out.
When the FDD is being accessed, a green LED below the FDD door will
illuminate. A read/write head can carry out four basic operations as prescribed by
the disk operating system (Windows 95):
•
Read data currently stored on the diskette
•
Write new data to the diskette
•
Erase data from the diskette
•
Format a diskette
Your computer’s floppy disk drive accepts 720KB double-density (2DD) diskettes
or 1.2MB and 1.44MB high-density (2HD) diskettes. These diskettes are
sometimes labeled by the manufacturer as double density 1.0MB and high-
density 2.0MB diskettes.