Index_E

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E

EAP (Extensible Authentication Protocol), 210–211

ECC (Error Checking Correction), 92, 93, 503

ECP mode, parallel communications, 144, 503

EDO DRAM (Extended Data Output DRAM), 85, 503

EEPROM (Electronically Erasable Programmable Read-Only Memory), 38 (fig.), 49, 503

EGA (Enhanced Graphics Adapter), 135, 137, 503

EIDE (Enhanced IDE) interface, 66, 173, 503

Eight dot three file names, 285

EISA bus, 51

Electricity, basic concepts, 42–43. See also Power supply

E-mail, 396–397

Emergency Repair Disk (ERD), 344

Emergency start-up disks, 309, 414–415

EMI (Electromagnetic Interference), 45, 503

EMM386.exe, 95, 295

EMS (Expanded Memory Specification), 294, 503

Encryption, 389, 450

Energy Star compliant monitors, 141, 142

EP (Electrophotographic process), 148–150

EPP mode, parallel communications, 144, 503

EPROM (Erasable Programmable Read-Only Memory) chips, 48, 504

Error messages and codes

Bad or missing operating system, 165

CMOS checksum, 47–48

CSMA/CD, 224, 231

Drive A is not ready, Abort, Retry or Fail, 163

error correction code and ECC, 92, 93

IBM beep codes, 50

Incorrect DOS version, 283

Invalid Media Type, 167–168

Memory Overflow, 148

Missing or unknown operating system, 279

Nonsystem disk or disk error; replace and strike any key to continue, 163

parity, checking, 92–93

POST, 49–50

ESCD (Extended System Configuration Data), 49

ESD (Electrostatic Discharge), 45, 64, 504

ESDI hard drive interface, 170

Ethernet bus topology, 203, 230–231

Ethernet standards, 224–225

Event Viewer, 359, 464–465

Exams. See CompTIA A+ certification exams

Expansion bus architecture, 50–54

Extended partitions, 167

External data bus, 64

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