Maxtor 91360D8 Guide

DiamondMax™3400
91360D8, 91190D7, 91020D6, 90845D5
90680D4, 90510D3, 90340D2
All material contained herein Copyright © 1998 Maxtor Corporation.
DiamondMax™, DiamondMax™ 1280, DiamondMax™ 1750, Diamond-
Max™ 2160, DiamondMax™ 2880, DiamondMax™ 3400 and MaxFax™ are
trademarks of Maxtor Corporation. No Quibble®Service is a registered
trademark of Maxtor Corporation. Other brands or products are trademarks
or registered trademarks of their respective holders. Contents and specifi-
cations subject to change without notice. All rights reserved.
Corporate Headquarters
510 Cottonwood Drive
Milpitas, California 95035
Tel: [phone]
Fax: [phone]
Research and Development
Engineering Center
2190 Miller Drive
Longmont, Colorado 80501
Tel: [phone]
Fax: [phone]
Part #1399/A
This document is a condensed version of the full Product Reference Manual.
This version only includes the Maxtor Information about the Product. Information
that can be found in the ANSI specification is not included in this document to
reduce its over all size. Also eliminated are the Table of Contents and Glossary.
This condensed version is created to allow faster downloading from Maxtor's
Internet home page and MaxFax services. This document contains 24 pages, the
full document contains 68 pages.

Revisions Manual No. 1399
VER.ONCENOITCESNOITPIRCSED ETAD
AC61097llA.esaelerlaitinI 89/92/50

BeforeYou Begin
Thank you for your interest in the Maxtor DiamondMax™ 3400 AT hard disk drives. This manual provides
technical information for OEM engineers and systems integrators regarding the installation and use of DiamondMax
hard drives. Drive repair should be performed only at an authorized repair center. For repair information, contact
the Maxtor Customer Service Center at 800-2MAXTOR or 408-432-1700.
Before unpacking the hard drive, please review Sections 1 through 4.
CAUTION
Maxtor DiamondMax 3400 hard drives are precision products. Failure to
follow these precautions and guidelines outlined here may lead to
product failure, damage and invalidation of all warranties.
1 BEFOREunpackingorhandling a drive, takeallproper electro-static discharge (ESD)
precautions,includingpersonnelandequipmentgrounding.Stand-alonedrivesaresensitiveto
ESDdamage.
2 BEFOREremoving drives from theirpackingmaterial,allow them to reachroom
temperature.
3 Duringhandling,NEVER drop,jar,or bumpadrive.
4 OnceadriveisremovedfromtheMaxtorshipping container, IMMEDIATELYsecurethedrive
throughitsmountingholes within a chassis.Otherwise,storethe drive on apadded,grounded,
antistaticsurface.
5 NEVERswitchDCpoweronto the drivebyplugginganelectrically live DCsourcecableinto
thedrive'sconnector.NEVERconnectalivebusto the drive'sinterfaceconnector.
Please do not remove or cover up Maxtor factory-installed drive labels.
They contain information required should the drive ever need repair.

DIAMONDMAX3400–INTRODUCTION
1 – 4
SECTION 1
Introduction
Maxtor Corporation
Maxtor Corporation has been providing high-quality computer storage products since 1982. Along the way,
we’ve seen many changes in data storage needs. Not long ago, only a handful of specific users needed more than
a couple hundred megabytes of storage. Today, downloading from the Internet and CD-ROMs, multimedia,
networking and advanced office applications are driving storage needs even higher. Even home PC applications
need capacities measured in gigabytes, not megabytes.
Products
Maxtor’s products meet those demanding storage capacity requirements with room to spare. They feature
proven compatibility and reliability. While DiamondMax™ 3400 is the latest addition to our family of high
performance desktop hard drives, the DiamondMax™ 2880, DiamondMax™ 2160 and DiamondMax™ 1750
series hard drives deliver industry-leading capacity, performance and value for many PC applications.
Support
No matter which capacity, all Maxtor hard drives are supported by our commitment to total customer
satisfaction and our No Quibble®Service guarantee. One call – or a visit to our home page on the Internet
(http://www.maxtor.com) – puts you in touch with either technical support or customer service. We’ll
provide you the information you need quickly, accurately and in the form you prefer – a fax, a downloaded
file or a conversation with a representative.
Manual Organization
This hard disk drive reference manual is organized in the following method:
❏Section 1 – Introduction
❏Section 2 – Description
❏Section 3 – Specifications
❏Section 4 – Installation
❏Section 5 – AT Interface
❏Section 6 – Host Software Interface
❏Section 7 – Interface Commands
❏Section 8 – Service and Support
❏Appendix – Glossary
Abbreviations
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ipbhcnirepstibces/stibMdnocesrepstibagem
SHCrotces-daeh-rednilycces/BMdnocesrepsetybagem
bdslebicedzHMztrehagem
ABddethgiewA,slebicedsmdnocesillim
AMDsseccayromemtceridBSMtibtnacifingistsom
CCEedocnoitcerrocrorreVmstlovillim
icfhcnirepsegnahcxulfsnsdnocesonan
GnoitareleccaOIPtuptuo/tupnidemmargorp
BGetybagigMPRetunimrepsnoitulover
zHztrehipthcnirepskcart
BKetybolikAMDUsseccayromemtceridartlu
ABL)gni(sserddakcolblacigolcesµdnocesorcim
BSLtibtnacifingistsaelVstlov
AmserepmaillimWsttaw

DIAMONDMAX3400–INTRODUCTION
1 – 5
Conventions
If there is a conflict between text and tables, the table shall be accepted as being correct.
Key Words
The names of abbreviations, commands, fields and acronyms used as signal names are in all uppercase type
(e.g., IDENTIFY DRIVE). Fields containing only one bit are usually referred to as the “name” bit instead of
the “name” field.
Names of drive registers begin with a capital letter (e.g., Cylinder High register).
Numbering
Numbers that are not followed by a lowercase “b” or “h” are decimal values. Numbers that are followed by
a lowercase “b” (e.g., 01b) are binary values. Numbers that are followed by a lowercase “h” (e.g., 3Ah) are
hexadecimal values.
Signal Conventions
Signal names are shown in all uppercase type.
All signals are either high active or low active signals. A dash character (-) at the end of a signal name
indicates that the signal is low active. A low active signal is true when it is below ViL and is false when it is
above ViH. A signal without a dash at the end indicates that the signal is high active. A high active signal is
true when it is above ViH and is false when it is below ViL.
When a signal is asserted, it means the signal is driven by an active circuit to its true state.
When a signal is negated, it means the signal is driven by an active circuit to its false state.
When a signal is released, it means the signal is not actively driven to any state. Some signals have bias
circuitry that pull the signal to either a true or false state when no signal driver is actively asserting or negating
the signal. These instances are noted under the description of the signal.

PRODUCTDESCRIPTION
2 – 1
SECTION 2
Product Description
Maxtor DiamondMax™ 3400 AT disk drives are 1-inch high, 3.5-inch diameter random access storage devices
which incorporate an on-board ATA/Ultra DMA controller. High capacity is achieved by a balanced
combination of high areal recording density and the latest data encoding and servo techniques.
Maxtor's latest advancements in electronic packaging and integration methods have lowered the drive's power
consumption and increased its reliability. Advanced magneto-resistive read/write heads, an state-of-the-art head/
disk assembly using an integrated motor/spindle design allow up to four disks in a 3.5-inch package.
Exceptionally high data transfer rates and 9.0 ms access times make these performance series disk drives especially
well-suited to high speed desktop and server applications.
DiamondMax 3400 Key Features
ANSI ATA-4 compliant PIO Mode 4 interface (Enhanced IDE)
Supports Ultra DMA Mode 2 for up to 33 MB/sec data transfers
256 KB buffer with multi-adaptive cache manager
9.0 ms seek time
Zone density and I.D.-less recording
High reliability with
> 500,000 hour MTBF
Outstanding shock resistance at 200 Gs
High durability with 50K constant start/stop cycles
Advanced multi-burst on-the-fly Error Correction Code (ECC)
Extended data integrity with ECC protected data and fault tolerant servo synchronization fields
Supports EPA Energy Star Standards (Green PC Friendly) with ATA powering savings commands
Auto park and lock actuator mechanism
Low power consumption
S.M.A.R.T. Capability
Note: Maxtor defines one megabyte as 10
6
or one million bytes and one gigabyte as 10
9
or one billion bytes.

PRODUCTDESCRIPTION
2 – 2
Product Features
Functional / Interface
Maxtor DiamondMax™ 3400 hard drives contain all necessary mechanical and electronic parts to interpret control
signals and commands from an AT-compatible host computer. See Section 3 Product Specifications, for complete
drive specifications.
Zone Density Recording
The disk capacity is increased with bit density management – common with Zone Density Recording. Each
disk surface is divided into 16 circumferential zones. All tracks within a given zone contain a constant
number of data sectors. The number of data sectors per track varies in different zones; the outermost zone
contains the largest number of data sectors and the innermost contains the fewest.
Read/Write Multiple Mode
This mode is implemented per ANSI ATA/ATAPI-4 specification. Read/Write Multiple allows the host to
transfer a set number of sectors without an interrupt request between them, reducing transfer process
overhead and improving host performance.
UltraDMA - Mode 2
Maxtor DiamondMax 3400 hard drives fully comply with the new ANSI Ultra DMA protocol, which greatly
improves overall AT interface performance by significantly improving burst and sustained data throughput.
Multi-word DMA (EISA Type B) - Mode 2
Supports multi-word Direct Memory Access (DMA) EISA Type B mode transfers.
Sector Address Translation
All DiamondMax 3400 drives feature a universal translate mode. In an AT/EISA-class system, the drive may
be configured to any specified combination of cylinders, heads and sectors (within the range of the drive's
formatted capacity). DiamondMax 3400 drives power-up in a translate mode:
LEDOMLYCDHTPSenoZLmocPWYTICAPACABLXAM
8D06319353626136)*()*(BM006,31428,465,62
7D09119950326136)*()*(BM009,11274,342,32
6D02019567916136)*()*(BM002,01021,329,91
5D54809383616136)*()*(BM554,8460,415,61
4D08609671316136)*()*(BM008,6804,182,31
3D0150928896136)*()*(BM001,5650,169,9
2D0430988566136)*()*(BM004,3407,046,6
(*) The fields LZone (Landing Zone) and WPcom (Write Pre-comp) are not used by the Maxtor hard drive
and the values may be either 0 or the values set by the BIOS. All capacities listed in the above table are based
on 106or one million bytes.

PRODUCTDESCRIPTION
2 – 3
Logical Block Addressing
The Logical Block Address (LBA) mode can only be utilized in systems that support this form of translation.
The cylinder, head and sector geometry of the drive, as presented to the host, differs from the actual physical
geometry. The host AT computer may access a drive of set parameters: number of cylinders, heads and
sectors per track, plus cylinder, head and sector addresses. However, the drive can’t use these host parameters
directly because of zoned recording techniques. The drive translates the host parameters to a set of logical
internal addresses for data access.
The host drive geometry parameters are mapped into an LBA based on this formula:
LBA = (HSCA - 1) + HHDA x HSPT + HNHD x HSPT x HCYA (1)
= (HSCA - 1) + HSPT x (HHDA + HNHD x HCYA) (2)
where HSCA = Host Sector Address, HHDA = Host Head Address
HCYA = Host Cylinder Address, HNHD = Host Number of Heads
HSPT = Host Sectors per Track
The LBA is checked for violating the drive capacity. If it does not, the LBA is converted to physical drive
cylinder, head and sector values. The physical address is then used to access or store the data on the disk and
for other drive related operations.
Defect Management Zone (DMZ)
Each drive model has a fixed number of spare sectors per drive, all of which are located at the end of the
drive. Upon detection of a bad sector that has been reassigned, the next sequential sector is used.
For example, if sector 3 is flagged, data that would have been stored there is “pushed down” and recorded
in sector 4. Sector 4 then effectively becomes sector 3, as sequential sectors are “pushed down” across the
entire drive. The first spare sector makes up for the loss of sector 3, and so maintains the sequential order of
data. This push down method assures maximum performance.
On-the-Fly Hardware Error Correction Code (ECC)
33 bits, single burst, guaranteed
Software ECC Correction
81 bits, single burst, guaranteed
33 bits, double bursts, guaranteed
Automatic Park and Lock Operation
Immediately following power down, dynamic braking of the spinning disks delays momentarily allowing the
read/write heads to move to an inner mechanical stop. A small fixed magnet holds the rotary actuator in
place as the disk spins down. The rotary actuator is released only when power is again applied.

PRODUCTDESCRIPTION
2 – 4
Cache Management
Buffer Segmentation
The data buffer is organized into two segments: the data buffer and the micro controller scratch pad.
The data buffer is dynamically allocated for read and write data depending on the commands received.
A variable number of read and write buffers may exist at the same time.
Read-Ahead Mode
Normally, this mode is active. Following a read request, disk read-ahead begins on the first sector and
continues sequentially until the allocated buffer is full. If a read request is received during the read-ahead
operation, the buffer is examined to determine if the request is in the cache. If a cache hit occurs, read-
ahead mode continues without interruption and the host transfer begins immediately.
Automatic Write Reallocation (AWR)
This feature is part of the write cache and reduces the risk of data loss during deferred write operations. If a
disk error occurs during the disk write process, the disk task stops and the suspect sector is reallocated to a
pool of alternate sectors located at the end of the drive. Following reallocation, the disk write task continues
until it is complete.
Write Cache Stacking
Normally, this mode is active. Write cache mode accepts the host write data into the buffer until the buffer
is full or the host transfer is complete. A command complete interrupt is generated at the end of the transfer.
A disk write task begins to store the host data to disk. Host write commands continue to be accepted and
data transferred to the buffer until either the write command stack is full or the data buffer is full. The drive
may reorder write commands to optimize drive throughput.

PRODUCTDESCRIPTION
2 – 5
Major HDA Components
Drive Mechanism
A brush-less DC direct drive motor rotates the spindle at 5,400 RPM (±0.1%). The dynamically balanced
motor/spindle assembly ensures minimal mechanical run-out to the disks. A dynamic brake provides a fast
stop to the spindle motor upon power removal. The speed tolerance includes motor performance and motor
circuit tolerances.
Rotary Actuator
All DiamondMax™ 3400 drives employ a rotary voice coil actuator which consists of a moving coil, an
actuator arm assembly and stationary magnets. The actuator moves on a low-mass, low-friction center shaft.
The low friction contributes to fast access times and low power consumption.
Read/Write Electronics
An integrated circuit mounted within the sealed head disk assembly (near the read/write heads) provides up
to eight head selection (depending on the model), read pre-amplification and write drive circuitry.
Read/Write Heads and Media
Low mass, low force magneto-resistive read/write heads record data on 3.5-inch diameter disks. Maxtor uses
a sputtered thin film medium on all disks for DiamondMax 3400 drives.
Air Filtration System
All DiamondMax 3400 drives are assembled in a Class 100 controlled environment. Over the life of the drive,
a 0.1 micron filter and breather filter located within the sealed head disk assembly (HDA) maintain a clean
environment to the heads and disks. DiamondMax 3400 drives are designed to operate in a typical office
environment with minimum environmental control.
Microprocessor
The microprocessor controls the following functions for the drive electronics:
Command execution
Cache management
Data correction and error recovery
Diagnostic execution
Data sequencing
Head positioning (including error recovery)
Host interface
Index detection
Spin speed control
Seeks
Servo
S.M.A.R.T.

PRODUCTDESCRIPTION
2 – 6
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Figure 2-1
PCBA Jumper Location and Configuration
4092 Cylinder Limitation
On some older BIOS', primarily those that auto-configure the disk drive, a hang may occur when the drive
cylinder value exceeds 4096. The 4092 Cylinder Limitation jumper reduces the capacity in the Identify Drive to
4092 allowing large capacity drives to work with older BIOS'. A software driver is required to access the full
capacity of the drive.
Subsystem Configuration
Dual Drive Support
Two drives may be accessed via a common interface cable, using the same range of I/O addresses. The drives
are jumpered as device 0 or 1 (Master/Slave), and are selected by the drive select bit in the
Device/Head register of the task file.
All Task File registers are written in parallel to both drives. The interface processor on each drive decides
whether a command written to it should be executed; this depends on the type of command and which
drive is selected. Only the drive selected executes the command and activates the data bus in response to
host I/O reads; the drive not selected remains inactive.
A master/slave relationship exists between the two drives: device 0 is the master and device 1 the slave.
When J50 is closed (factory default, figure 2-1), the drive assumes the role of master; when open, the drive
acts as a slave. In single drive configurations, J50 must be closed.
Cable Select Option
CSEL (cable select) is an optional feature per ANSI ATA specification. Drives configured in a multiple drive
system are identified by CSEL’s value:
– If CSEL is grounded, then the drive address is 0.
– If CSEL is open, then the drive address is 1.
Jumper Location/Configuration
Darkened jumper pins indicate factory-installed (default) shunts.

PRODUCTSPECIFICATIONS
3 – 7
SECTION 3
Product Specifications
Models and Capacities
Performance Specifications
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evirDrepsrotceS 428,465,62274,342,32021,329,91460,415,61804,182,31650,169,9407,046,6
LEDOM 8D063197D091196D020195D548094D086093D015092D04309
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Drive Configuration
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PRODUCTSPECIFICATIONS
3 – 8
Physical Dimensions
Figure 3 - 1
Outline and Mounting Dimensions
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htdiWsehcni20.4sretemillim1.201
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PRODUCTSPECIFICATIONS
3 – 9
Power Requirements (Average)
Power Mode Definitions
Spin-up
The drive is spinning up following initial application of power and has not yet reached full speed.
Seek
A random access operation by the disk drive.
Read/Write
Data is being read from or written to the drive.
Idle
The drive is spinning, the actuator is parked and powered off and all other circuitry is powered on.
The drive is capable of responding to read commands within 40 ms.
Standby
The spin motor is not spinning. The drive will leave this mode upon receipt of a command that requires
disk access. The time-out value for this mode is programmable. The buffer is active to accept write data.
Sleep
This is the lowest power state – with the interface set to inactive. A software or hardware reset is required
to return the drive to the Standby state.
EPA Energy Star Compliance
Maxtor Corporation supports the goals of the U.S. Environmental Protection Agency’s Energy Star program
to reduce the electrical power consumption of computer equipment.
Environmental Limits
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PRODUCTSPECIFICATIONS
3 – 10
Reliability Specifications
AFR
< 1.7% The annualized average failure rate (AFR) applies to the period prior
to the expiration of component design life, and is based on failures
chargeable to Maxtor.
MTBF
> 500,000 hours Maxtor does not differentiate between various usage profiles (e.g.,
power-on hours, power saving modes, non-operating periods or
operating temperatures within the published specification.)
Quality Acceptance Rate
TBD (< 1,500 DPPM) The quality acceptance rate indicates the percentage of Maxtor
products successfully installed by our customers, and/or the number
of defective parts per million (DPPM) encountered during the entire
installation process.
Start/Stop Cycles
50,000 (minimum) This indicates the minimum cycles for reliable start/stop function at a
≥60% confidence level.
Data Reliability
< 1 per 1014 bits read Data errors (non-recoverable). Average data error rate allowed with all
error recovery features activated.
Component Design Life
5 years (minimum) Component design life is defined as a.) the time period before
identified wear-out mechanisms impact the failure rate, or b.) the time
period up to the wear-out point when useful component life expires.
Shock and Vibration
RETEMARAPGNITAREPOGNITAREPO-NON
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PRODUCTSPECIFICATIONS
3 – 11
EMC/EMI
Radiated Electromagnetic Field Emissions - EMC Compliance
The hard disk drive mechanism is designed as a subassembly for installation into a suitable enclosure and is
therefore not subject to Subpart J of Part 15 of FCC Rules (47CFR15) or the Canadian Department of
Communications Radio Interference Regulations. Although not required, the disk mechanism has been
tested within a suitable end-use product and found to comply with Class B limits of the FCC Rules and
Regulations of the Canadian Department of Communications.
The CE Marking indicates conformity with the European Union Low Voltage Directive (73/23/EEC) when
the disk mechanism is installed in a typical personal computer. Maxtor recommends that testing and analysis
for EMC compliance be performed with the disk mechanism installed within the user's end-use application.
Canadian Emissions Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set
out in the radio interference regulations of the Canadian department of communications.
Le present appareil numerique n'emet pas de bruit radioelectriques depassant les limites applicables aux
appareils numeriques de Class B prescrites dans le reglement sur le brouillage radioelectrique edicte par le
ministere des communications du Canada.
Safety Regulatory Compliance
All Maxtor hard drives comply with relevant product safety standards such as CE, CUL, TUV and UL rules and
regulations. As delivered, Maxtor hard drives are designed for system integration before they are used.

INSTALLATION
4 – 12
SECTION 4
Handling and Installation
Pre-formatted Drive
This Maxtor hard drive has been formatted at the factory. Do not use a low-level formatting program.
Important Notice
There are a number of system BIOS’s currently in use which do not support hard drives with more than 4095
cylinders (2.1 gigabytes). This section contains information describing the conditions which may identify this
limitation. In order to obtain the full capacity of your Maxtor drive, you will need to follow the recommended
installation instructions.
Hard Drive Handling Precautions
◆During handling, NEVER drop, jar, or bump a drive. Handle the drive by its sides and avoid touching the printed circuit
board assembly (PCBA).
◆Hard drives are sensitive to electrostatic discharge (ESD) damage. Use proper ESD practices by grounding yourself
and the computer system the hard drive will be installed in.
◆Allow the hard drive to reach room temperature BEFORE installing it in your computer system.
◆ NEVER switch DC power onto the drive by plugging an electrically live DC source cable into the drive's connector.
NEVER connect a live connector to the hard drive's IDE interface connector.
Electro-Static Discharge (ESD)
To avoid some of the problems associated with ESD, Maxtor advises that anyone handling a disk drive use a
wrist strap with an attached wire connected to an earth ground. Failure to observe these precautions voids the
product warranty.
Manufacturers frequently experience “unsolved” component/hardware malfunctions often caused by ESD. To
reduce the incidence of ESD-related problems, Maxtor recommends that any electronics manufacturing plans
include a comprehensive ESD program, the basic elements and functions of which are outlined here:
ESD Program Element ESD Program Function
Management Institute and maintain
Chief coordinator Organize and enforce
Multi-department committee Evaluate and improve
Employee training Educate and inform
ESD program supplies typically include: wrist- and foot-worn grounding straps; counter-top and floor antistatic
matting; wrist strap testers; ESD video and training materials. Sources for such supplies include:
Static Control Systems – 3M Charleswater
225-4S, 3M Center 93 Border St.
St. Paul, MN 55144 West Newton, MA 02165-9990
Maxtor also offers a complete video training package, “Care and Handling of Maxtor Disk Drives.”
Contact your Maxtor representative for details.

INSTALLATION
4 – 13
Unpacking and Inspection
Retain any packing material for reuse. Inspect the shipping container for evidence of damage in transit. Notify
the carrier immediately in case of damage to the shipping container.
As they are removed, inspect drives for evidence of shipping damage or loose hardware. If a drive is damaged
(and no container damage is evident), notify Maxtor immediately for drive disposition.
Figure 4 - 1
Multi-pack Shipping Container

INSTALLATION
4 – 14
Figure 4 - 2
Single Pack Shipping Container (Option A)
Figure 4 - 3
Single Pack Shipping Container (Option B)
Repacking
If a Maxtor drive requires return, repack it using Maxtor packing materials, including the antistatic bag.
Physical Installation
Recommended Mounting Configuration
The DiamondMax™ 3400 drive design allows greater shock tolerance than that afforded by larger, heavier
drives. The drive may be mounted in any attitude using four size 6-32 screws with 1/8-inch maximum
penetration and a maximum torque of 5-inch pounds. See Figure 3-1 for mounting dimensions. Allow
adequate ventilation to the drive to ensure reliable operation.

INSTALLATION
4 – 15
1Before You Begin
IMPORTANT – PLEASE READ!
Please read this Installation Sheet completely before installing the Maxtor hard drive. It gives general
information for installing a Maxtor hard drive in a typical computer system. If you don’t understand the
installation steps, have a qualified computer technician install the hard drive. DO NOT use any low-level
formatting software on this drive.
Handling Precautions


 Allow the hard drive to reach room temperature
BEFORE installing it in your computer system.
쇵쇵
쇵쇵
쇵 Hard drives are sensitive to electrostatic discharge (ESD) damage.
Handle the drive by its sides. DO NOT touch the printed circuit board assembly.
ᏜᏜ
ᏜᏜ
Ꮬ
NEVER drop, jar, or bump the drive.
ᏜᏜ
ᏜᏜ
Ꮬ
DON’T connect/disconnect any drive cables when the power is on.
Tools for Installation
The following tools are needed to complete the installation of your Maxtor hard drive:
◆For drive capacities 8.4 GB or less, a DOS 5.0
(or higher) or Windows 95 bootable system
diskette
◆For drive capacities greater than 8.4 GB,
a Windows 95 bootable system diskette
◆A small (#2) Phillips head screw driver
◆Small needle-nose pliers or tweezers
◆Your computer user’s manual
Capacity Barriers
Due to operating system limitations, DOS cannot access the full capacity of drives larger than 8.4 GB. The
Microsoft Windows 95 operating system or equivalent (full installation), NOT a Windows 95 upgrade from
DOS (Windows 3.1 or 3.11), is required to obtain the full capacity of any hard drive larger
than 8.4 GB.