Index_H

H

Half-duplex transmission, 551

Halon fire extinguisher, 404

Hard drives

active partition, 134

activity LED, 537

basic drives, 135

bays for, 144

BIOS settings, 130–131, 145–146

buffer (cache) memory, 133

capacity of, 149–150

compatibility, 132–133

connectors, 528

crashes, 152, 297

data back ups for, 151–152

described, 5, 129–131, 522

Disk Defragmenter, 527

Disk Management and diagnosis of problems, 150

drive letters, 135–136

drive overlay software, 149

dynamic disks, 135

EIDE interface, 532

ESDI interface, 529

extended partition, 135, 525

File and Settings Transfer Wizard, 152

file systems, 134

form factors, 132

FORMAT command, 136–137, 146, 320–321, 340, 527, 632–633

heads, 130

high-level format, 526–527

hot-swappable drives, 133, 153, 154

IDE/ATA interface, 529–531

installation and configuration, 141–145, 536–538

IRQs, 465–466

jumpers and jumper settings, 141

landing zone, 522

LBA support, 149

low-level format, 526

MBR, 523, 632

motherboards and, 139

notebook / laptop hard drives, 145

operating system errors, 147–149

operating systems, 133–138

partitioning, 134–136, 146, 524–525, 632–633

PCMCIA hard drives, 94, 154

platters, 133, 522

POST error, 408

primary partitions, 525

quality of, 133

RAID, 152–153, 538–539

read/write heads, 523

removal of, 139–140

ribbon cables, 141–143

round cables, 144

S-ATA interface, 531–533

ScanDisk,527, 633–634

selecting, 131–133

set up, 145–147

ST506 interface, 528–529

tracks, sectors, and cylinders, 523

troubleshooting, 147–150, 297, 536–538

UDMA speed ratings, 132

Hardware

adding or removing, 19

diagnostics and help from manufacturers, 256, 259–260

peripherals, 17, 295

quality of, 304

Hardware, A+ Core Hardware exam objectives, 361–375

Hardware profiles for laptops, 482

Windows 2000, 735–736

Windows ME, 767–768

Hardware tab of System applet, 27

Hazardous materials and MSDS, 405

HDDs. See Hard drives

Header connectors, motherboards and, 73

Headphones, 170, 185

Heads, hard drive, 130

Health settings, 17

Heat dissipation

air cooling and ATX motherboards, 399

diagnosing CPU problems, 88–90

fans, 86–87, 88–90, 403, 431–432

heat sinks, 86–87, 302, 431–432

liquid cooling, 432–433

overheating problems, troubleshooting, 290

temperature-monitoring software, 265

Hexadecimal number system, 463–464

Hibernation power option, 26

Hidden files, 627

HIMEM.SYS, 454, 636

HMA (High Memory Area), 453, 454, 635, 844

Home Edition, Windows XP, 793–794

Home key, 216

Home Page Internet setting, 236

Hot-swappable drives, 133, 153, 154

Hot-swapping USB devices, 557

HTML (Hypertext Markup Language), 596, 844

HTTP (Hypertext Transfer Protocol), 596, 739, 844

HTTPS (Hypertext Transfer Protocol Secure), 739

Hubs, network, 585

HVD (High-Voltage Differential) SCSI interface, 535–536, 844

HyperTerminal, 191–192, 251