HD Doctor Blog

When a laptop hard drive becomes "unbootable", and you are unable to repair it, you can often save the data on the hard drive by using a "slave drive" recovery method on a desktop computer. As long as the laptop hard drive has not been mechanically broken and the disk is still "readable", you should be successful in accessing and preserving the valuable data on the drive.

I know the frustration when you delete something you shouldn’t have, or your hard drive is corrupted. I will show you how to do a data recovery and hard drive recovery from a desktop computer or on a laptop computer. There is some software you can use to undelete software, or even…

PC
Personal computer.

PRML (Partial Response Maximum Likelihood)
A read channel using sampled data, active equalization and Veterbi detection to accurately retrieve the user data off the disk.

Partition
A way to logically divide a hard drive so that an operating system treats each partition as a separate hard drive. Each partition has a unique drive letter.

Passive Termination
A termination architecture that is used to match the impedance at the end of the SCSI bus by using a voltage divider network of passive resistors.

Peripheral
A device that performs a function and is external to the system board. Peripherals include displays, disk drives, and printers.

Platform
A basic design from which a series…

Disk Doctors Mac Data Recovery software recovers lost and deleted data from HFS+, HFSX file systems on Mac OS X 10.4 and above, which includes LEOPARD.

Recover Lost Data When:

• A volume has been formatted or reformatted
• Volume is inaccessible after re-partitioning or any sort of corruption causing inaccessibility to the volume
• Volume is not getting mounted
• Files and folders are accidentally deleted, Apple partition map is corrupted
• Apple catalog file is corrupted
• Drive has been initialized
• Disk verify and repair fails
• Any sort of corruption causing inability to boot your operating system

Disk Doctors Mac Data Recovery Software Features:

• Simple and intuitive user interface
• Supports recovery

…

MB (Megabyte)
One megabyte as 1,000,000 (one million) bytes.

MFM (Multiple Frequency Modulation)
A method of encoding analog signals into magnetic pulses or bits.

MR Heads (Magneto-resistive Heads)
MR heads were developed to increase area density and improve drive performance. MR heads use separate read and write elements, as opposed to traditional inductive thin-film read-write heads. MR heads use an inductive element for writing data, and a separate magneto-resistive element for reading information. The read element has a magnetically sensitive material that detects data recorded on the magnetic disk surface. MR head construction results in a stronger signal than that produced by inductive thin-film read-write heads, which permits it to read higher area density data. Since the…

Incident Response and Computer Forensics, Second Edition by Chris Prosise, Kevin Mandia, Matt Pepe.

• Paperback: 507 pages
• Publisher: McGraw-Hill/Osborne; 2 edition (July 17, 2003)
• Language: English
• ISBN-10: 007222696X
• ISBN-13: 978-0072226966
• Product Dimensions: 9.1 x 7.3 x 1.2 inches
• Shipping Weight: 2 pounds
• Popular:

Description:

A strong system of defenses will save your systems from falling victim to published and otherwise uninventive attacks, but even the most heavily defended system can be cracked under the right conditions. Incident Response aims to teach you how to determine when an attack has occurred or is underway–they’re often hard to spot–and show you what to do about it. Authors…

Landing Zone
The heads move to this location on the inner portion of the disk when commanded, or when the power has been turned off. User data is not stored in this area of the disk.

Laser Textured Media
Laser textured disks minimize the wear and friction on a hard drive. The precision and consistency of the laser zone texturing process is a major contributor to the robustness of newer model hard drives.

Latency
The period of time that the read/write heads wait for the disk to rotate to the correct position to access the desired data. For a disk rotating at 5200 RPM, the average latency is 5.8 milliseconds; or, the average time delay between the…

Firmware is a type of software stored directly inside hardware components, such as hard disk drives or motherboards, that tells the hardware how to interact with your computer’s operating system. You would typically only need to upgrade your hard drive’s firmware if you installed a new motherboard or upgraded to a new operating system that the drive was not originally intended to interact with. Firmware upgrades are meant to be administered through a floppy disk, but with some extra work you can also apply them with a standard CD as well.

Note: Save a backup copy of each of your important files to an external source before attempting to update the firmware of your hard drive. If you stop…