
Welcome to DiskWarrior
Chapter 1: Introduction 10
When Should I Rebuild My Directory with DiskWarrior?
Obviously, you should run DiskWarrior when you suspect that there is directory damage on one
of your disks. Directory damage can result in the disk not mounting (not appearing on the
Desktop when the computer is started), missing files or folders, or crashes when files are used.
You will also find DiskWarrior useful when another program reports directory damage.
The best use of DiskWarrior is for preventative maintenance of your disks. Many forms of
directory damage do not manifest themselves until long after the damage has actually occurred.
You can prevent this damage from escalating by running DiskWarrior on your disks regularly.
Alsoft recommends that you run DiskWarrior once a month. DiskWarrior will rebuild your disk
directory, eliminating all existing directory damage. The directory DiskWarrior creates is also
optimized for maximum directory performance, and this will speed up the performance of your
disk. You will find doing this regular maintenance of your directories more useful than
rebuilding your Desktop.
What Is Directory Optimization?
In a directory, there is a logical order and a physical order of the file and folder information that
is stored. The logical order is based on the name of the files and the creation order of folders.
The physical order depends upon the available free space on the disk and space within the
directory made available as files are deleted and added. Creating and deleting files makes the
physical order less like the logical order as files and folders are added to the directory where
space is available. Directory searches are performed using the logical order of the directory. As
the physical order becomes less like the logical order, the drive mechanism must move more to
follow the logical order.
Nearly everything uses a search based upon logical order to find files, including Spotlight, the
Finder, applications that search for their preference files, applications that build font menus, and
open dialogs. DiskWarrior optimizes the directory, improving the speed of all of these activities
and many more. Other programs may not provide the true directory optimization provided by
DiskWarrior.
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