UltraPack Undo Upper Memory Block VCACHE Virtual Control Program Interface memory Virus Volatile Memory WORM (Write Once, Read Many) Worm Write-behind caching Write-Through XBDA XMS

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UltraPack: A file and folder compression format that offers better compression than standard or HiPack compression.

Undo: A feature in application software that allows the user to cancel the action of the previous instruction.

Upper Memory Block: noncontiguous section of allocatable memory located between the 640K and 1024K addresses.

VCACHE: A 32-bit, protected-mode cache driver, which replaces the 16-bit, real-mode SMART Drive disk cache software.

Virtual Control Program Interface: A simple API for protected-mode programs to allocate memory and switch into or out of protected mode.

Virtual memory: Memory that appears to an application to be larger and more uniform than it is.

Virus: A program which attaches itself to other programs for the purpose of duplicating itself. Viruses often (but not always) contain harmful code, which is triggered by some event, after a certain number of reproductions, or on a specific date.

Volatile Memory: Memory (such as electronic semiconductor memory) that loses its contents in the event of a power interruption.

WORM (Write Once, Read Many): A storage medium, which may be written exactly once, but may not be altered once data is stored.

Worm: A program, which duplicates itself, typically across networks. In contrast to a virus, a worm does not attach itself to other programs, but can reproduce itself independently.

Write-behind caching: Temporarily storing data in memory before it is written on disk for permanent storage.

Write-Through: One of two main types of caches, the write-through cache immediately writes any new information to the medium it is caching, so that the cache never contains information which is not already present on the cached device.

XBDA: see Extended BIOS Data Area.

XMS: see Extended Memory Specification.

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Data Recovery Book
 
Chapter 1 An Overview of Data Recovery
Chapter 2 Introduction of Hard Disks
Chapter 3 Logical Approach to Disks and OS
Chapter 4 Number Systems
Chapter 5 Introduction of C Programming
Chapter 6 Introduction to Computer Basics
Chapter 7 Necessary DOS Commands
Chapter 8 Disk-BIOS Functions and Interrupts Handling With C
Chapter 9 Handling Large Hard Disks
Chapter 10 Data Recovery From Corrupted Floppy
Chapter 11 Making Backups
Chapter 12 Reading and Modifying MBR with Programming
Chapter 13 Reading and Modifying DBR with Programming
Chapter 14 Programming for “Raw File” Recovery
Chapter 15 Programming for Data Wipers
Chapter 16 Developing more Utilities for Disks
Appendix Glossary of Data Recovery Terms
 
 
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