Index_E

E

EAP (Extensible Authentication Protocol), 569–570

ECC (Error Checking Correction), 451–452, 840

ECP mode, parallel communications, 502–503, 840

EDIT command, 318

EDO DRAM (Extended Data Output DRAM), 443, 840

EEPROM (Electronically Erasable Programmable Read-Only Memory), 396, 407, 840

EGA (Enhanced Graphics Adapter), 493, 495, 840

EIDE (Enhanced IDE) devices

hard drive selection, 131–133

interface, 424, 532, 841

master and slave devices, 139, 141, 148

testers for drives, 148

Eight dot three file names, 625

EISA bus, 410

Electricity, basic concepts, 400–401. See also Power supply

E-mail

attachments won’t download, 246

dial up settings for, 247

Outlook express account setup, 244

protocols, 740

usernames, 244

viruses, 597

Emergency boot disks, 23–25, 59, 650–651, 756–757

Emergency Repair Disk (ERD), 278–279, 687, 709, 758

EMI (Electromagnetic Interference), 403, 841

EMM386.exe, 454, 636

EMS (Expanded Memory Specification), 635, 841

ENABLE command, 337–338

Encryption, 731, 794

End key, 216

Energy Star compliant monitors, 499–500

EP (Electrophotographic process), 507–509

EPP mode, parallel communications, 503, 841

EPROM (Erasable Programmable Read-Only Memory) chips, 406–407, 841

ERASE command, 316–317

Erratic behaviors, troubleshooting, 287

Error-checking applet, 56–57

Error detection, memory, 116

Error messages and codes

AOL sign-on and, 249

bad or missing operating system, 523

blue screen of death and, 28, 124, 261

buffer overrun errors, 169

CMOS checksum, 405–406

CSMA/CD, 582, 589

drive A is not ready, Abort, Retry or Fail, 521

error correction code and ECC, 451–452

IBM beep codes, 408

incorrect DOS version, 623

information about, 28–29, 261

invalid Media Type, 526

keyboard, 218–219

memory error messages, 124–125, 507

missing or unknown operating system, 620

modem errors, 190, 192–193

nonsystem disk or disk error, 148, 521

numbered messages, 261

parity checking, 451–452

pointing devices (mice), 212

POST, 218–219, 407–408

random error messages, 287

troubleshooting and, 255

ESCD (Extended System Configuration Data), 407

ESD (Electrostatic Discharge), 403, 421, 841

ESDI hard drive interface, 529

Ethernet

adapters, 194–195

bus topology, 588–589

standards, 582–583

Event Viewer, 20, 702, 809–811

Exams. See CompTIA A+ certification exams

EXIT command, 319, 338

EXPAND command, 319, 338–339

Expansion bus architecture, 409–413

Expansion slots and cards

card removal and installation, 91–92

on motherboards, 4, 70–72, 409–413

troubleshooting, 295

See also specific devices

Extended partitions, 525

Extended system configuration data (ESCD), BIOS settings, 17

External data bus, 422