Internal / External Hard Disk Drives (HDDs)

Internal hard disk drives (HDDs) are normally used as the primary data storage within computing devices or RAID storage systems. These devices can and do fail, it’s a matter of when they will fail, rather than if they will fail.

External hard disk drives (HDDs) are intended to be used as secondary storage or backup hard drives. However, many decide to use them as extended storage or portable storage rather than as a reliable backup device. Portable and easy to use external hard disk drives typically use one or more standard 2.5″ or 3.5″ internal hard drives in a portable enclosure that connects to a computer’s USB or other data port. When an internal or external hard drive fails or becomes damaged, Data Rescue MDs has qualified data recovery specialists with the expertise, training and professional data recovery tools to reunite you with the lost part of your digital life!

Common devices we recover:

  • Seagate
  • Western Digital
  • Hitachi
  • Toshiba
  • Samsung
  • SanDisk
  • LaCie
  • G-Drive
  • 1.8” ZIF Drives (Found in Sony Handycam)
  • and all others
Hard Drive - On Side

Why Hard Drives Fail

Physical Failures

Traditional (electro-mechanical) internal and external hard drives have delicate internal moving parts that can become less reliable over time. A hard drive’s read/write heads hover on molecules of air just above the spinning media on which your data is stored. When they come into contact with the spinning media surface, damage to the read/write heads and media will occur immediately resulting in data loss. In addition to internal component and media damage, other common physical failures include:

  • Seized media spindle, prevents the internal media discs from spinning.
  • Stiction, the internal read/write heads collapse on the media surface holding the media captive
  • Actuator arm jams or fails
  • Mechanical noises such as clicking, scraping, buzzing or beeping indicate mechanical failure or damage

Electronic Failures

When a hard drive has an electronic issue, it may stop working entirely or your computer may report an error message. Electronic failures are potentially as serious as physical hard drive failures and should only be handled by experienced data recovery professionals. Some internal and external hard drives experience electronic failures due to:

  • Power surges from unprotected outlets
  • Logic board or internal pre-amplifier component failure
  • Improper power supply
  • Excessive heat

Logical Failures

Hard drives can experience data loss due to non-physical errors that affect how the drive operates. Some of these failures include:

  • Deterioration of the media or read-write heads reduces the drive’s ability to read the data stored on the media surface
  • Accidental formatting or erasing the drive or deleting files and folders
  • Corruption of the service area modules (firmware) on the spinning media eliminates the drives ability to function properly



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    Raid Server/NAS

    Data Rescue MDs specializes in recovery of critical business data and VMs from RAID/NAS and Drobo data storage systems using state-of-the-art equipment, processes and expertise.

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    Hard Drives

    Our data recovery specialists are fully equipped to recover data from any type of internal or external hard drive, including damaged hard drives requiring clean room services.

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    Solid State Drives

    Data Rescue MDs SSD data recovery engineers use specialized tools, techniques and expertise to accomplish high SSD data recovery
    success rates.

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    Data Rescue MDs have been successfully recovering data from failed iMACS, PCs and all file systems for over a decade.

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    USB Flash/SD Cards

    We recover data and photos from most SD, micro-SD, XQD CF Cards and USB Flash Drives using micro soldering and specialized tools.

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    Mobile Devices

    Our engineers are very successful in recovering data from all types of liquid damaged and physically damaged mobile devices.

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Recover Your Data Today

When you need data recovered from your internal or external hard drive, choose the trusted experts at Data Rescue MDs to get reunited with your data! Call (847) 461-3282
Lose your fear, not your data!


Call our specialists at (847) 461-3282 or complete our form to begin the process of recovering your data.

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    Free Shipping

    If you cannot drop off your device, we can email you a pre-paid shipping label with packaging instructions.

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    Free Evaluations

    After we receive your device, our data recovery specialists begin the evaluation of your damaged device, free of charge.

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    No Recovery, No Fee.

    In the unlikely event your data is not recoverable, all fees are waived, including return shipping.

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