O'Reilly logo

Computer Evidence: Collection and Preservation, Second Edition by Christopher L. T. Brown

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Summary

  • Prior to IBM introducing the first computer with a hard disk in 1956 [CED01], computers used core memory, tape, and drums for data storage.

  • The 3040 Winchester was named after the Winchester 30-30 rifle because of its storage capacity and access time of 30Mb and 30 milliseconds.

  • Today’s disk platters are normally composed of two materials: the first giving the platter its strength and the second being magnetic coating.

  • The unformatted capacity of a disk disregards low-level components such as preamble, ECC (Error Correction Code), and intersector gaps used to electromechanically control the R/W heads.

  • Today’s disk speeds are measured in revolutions per minute (RPMs) and include 5,400, 7,200, 10,000, and 15,000 RPM disks.

  • The disk-access method ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required