Instruction Manual

8 Chapter 1: Introduction

Welcome to DiskWarrior

Alsoft, the Utility Company

At Alsoft, we have been writing software for Mac OS computers since 1984. We are a Macintosh

only software company whose expertise is in providing powerful, useful and safe utilities that en-

hance the user experience while maintaining the ease-of-use Macintosh owners have come to

expect. Some of these utilities include DiskExpress®, MasterJuggler®, PlusMaker™, and

PlusOptimizer™.

When we introduced DiskExpress in 1986, it was the ﬁrst and only disk optimizer for the Mac-

intosh. Our MasterJuggler Pro is the most comprehensive font management utility package on

the market today. With the release of Mac OS 8.1 in January 1998, Apple introduced their new

disk format for Mac OS computers, known as Mac OS Extended format or HFS Plus. Simulta-

neously, Alsoft introduced PlusMaker to let you effortlessly convert your older HFS disks to the

new format. Later that year when Alsoft shipped PlusOptimizer, it was the ﬁrst disk optimizer

compatible with Mac OS 8.1 and HFS Plus. You can expect to ﬁnd the safest and most powerful

disk directory damage elimination utility for Mac OS computers only from Alsoft. DiskWarrior

has won more awards than any other disk utility and is recommended as the ﬁrst choice of Mac

experts everywhere.

What Is DiskWarrior?

DiskWarrior is a utility designed from the ground up with a totally different approach to resolving

directory damage. DiskWarrior resolves disk damage by rebuilding your disk directory using

data recovered from the original directory, thereby recovering ﬁles and folders that you thought

were lost. The directories DiskWarrior creates are also optimized for maximum directory per-

formance.

DiskWarrior is not a disk repair program in the conventional sense. It does not attempt to solve

all of the possible problems that can occur with a disk. It specializes in eliminating directory er-

rors -- the most common problems Mac OS users have with their disks. DiskWarrior rebuilds

your disk directories making them error-free, eliminating any problems the errors would have

caused, and recovering lost ﬁles. It ﬁxes any problem with master directory blocks and alternate

master directory blocks (HFS), volume headers and alternate volume headers (HFS Plus), vol-

ume bit maps, catalog trees, and extents trees.