The book is nothing but a collection of blunders. Here is a sample from Part II On page 22 author gives the complete commands for fdisk in almost one page without any explanation at all. As if that was not enough, the very next chapter repeats the same table - again without any explanations, but with one difference - most of the commands are bb - Edit the disk labelb - Toggles the DOD compatibility flagb - adds a new partitionb - Creates a new empty DOS partition tableb - quits without saving the changesb - Creates a new empty sun disklabel.This is probably the simpler of the mistakes, as the editor can be blamed for this. Throughout the book you will see mistakes simply because the Author himself has not understood the concept. Like mixing up between Partition table, boot record and superblock. It came as a surprise to me that many people gave good rating for this book. Frankly I suspect foulplay here. It could very well be the authors themselves.