Types of Hard Drive Damage

Rate this item
(0 votes)

b2ap3_thumbnail_iStock_000002566431XSmall.jpgIn our data recovery practice we have faced a variety of hard drive problems. So, in this article we tried to put together the information about different types of HDD damage.

Often, the reason lies in the damage of circuit board or reading heads. In this case data can be accessed only by an expert who will replace faulty component with a working one. If the procedure is without implications, after repair you will have access to 100% of your data.

It is much more difficult to recover data if a read/write head touches magnetic platter of a hard drive. It happens when a hard drive is subjected to shock since the distance between the head and platters in modern devices is minimal. In its turn, damage of magnetized surface virtually always implies loss of bits stored there. Head can touch the bad surface many times and each time breaking the platter’s fragments. These fragment can stuck inside and scratch hard drive’s surface and cause other troubles. A user will not be able to solve this problem because a head won’t be able to fly over the bad spot.

Overvoltage of read/write head could lead to irreversible damage of areas containing data. Magnetized hard drive will also lead to irreversible loss. Speaking of which, it is not only deleted bits but a mechanical destruction of memory sectors. Sometimes recovery specialists are able to recover data partially (all depends upon a specific hard drive). At the same time troublesome Hitachi drives usually are not subject to recovery: the reason behind it is that the manufacturer prefers not to tell about built-in in it software. Other brands at least provide a possibility to read data from the rest of platters.

Strange and yet a fact: the reason for problems may be even an internal disbalance. Uneven rotation of hard drive platters due to defect bearings will lead to undesirable changes in tracks and the system won’t know about it. As a result we get a data mishmash.

As a rule, bearings or spindle motor failure occurs due to errors during movement or transportation of a hard drive. Experts often get access to data by restoring the balance (by shifting and centring platters).

Logic errors do not require works to be done in a clean room environment. Usually they occur due to mishandling or deleting files against a backdrop of adequate performance of a hard drive.

Even though the source of problems hides in hard drive, probably it is only an ordinary bad sector. Such sectors can be found on all drives: main list contains bad sectors detected at the factory and auxiliary list is being replenished during the device operation — as long as sectors fail. Such divergence occurs quite often and pass for normal, but if the self-diagnostics system S.M.A.R.T. advises to re-save data ASAP, things look blue. Usually it indicates that auxiliary list is full and the number of bad sectors has exceeded the average value.

Now lets talk about irreversible damages. If a drive got in fire or was impacted by another heat source with magnetic material heated up above Curie point, the device will be completely demagnetized. A specific Curie point depends on a hard drive model. In magneto-optic devices the Curie temperature is default (laser heating) but things are different with hard disk drives.

An attempt to solve the problem yourself can make things worse — this is what make the data recovery process so difficult. According to statistics Europeans try to right the ship themselves more often than Americans do. After a number of failed attempts to recover data independently the device is brought to our company and data recovery becomes more complicated and sometimes even not possible. We have already published a number of articles on how to handle a hard drive if it contains important data.

Another reason for complications — employees tend to hide the fact that something is wrong with the device from the boss. We had a case when instead of a damaged hard drive we received a CD-ROM :)

Data Recovery Expert

Viktor S., Ph.D. (Electrical/Computer Engineering), was hired by DataRecoup, the international data recovery corporation, in 2012. Promoted to Engineering Senior Manager in 2010 and then to his current position, as C.I.O. of DataRecoup, in 2014. Responsible for the management of critical, high-priority RAID data recovery cases and the application of his expert, comprehensive knowledge in database data retrieval. He is also responsible for planning and implementing SEO/SEM and other internet-based marketing strategies. Currently, Viktor S., Ph.D., is focusing on the further development and expansion of DataRecoup’s major internet marketing campaign for their already successful proprietary software application “Data Recovery for Windows” (an application which he developed).

34 comments

  • Comment Link Lynn Saturday, 25 November 2017 03:57 posted by Lynn

    It's very trouble-free to find out any topic on net
    as compared to textbooks, as I found this piece of writing at this website.

  • Comment Link Margarito Friday, 24 November 2017 01:50 posted by Margarito

    Fantastic blog! Do you have any suggestions for aspiring writers?
    I'm hoping to start my own blog soon but I'm a little lost
    on everything. Would you suggest starting with a free platform like Wordpress or go for a paid
    option? There are so many options out there that I'm completely confused ..
    Any recommendations? Thank you!

  • Comment Link Donna Monday, 20 November 2017 13:48 posted by Donna

    Everyone loves what you guys tend to be up too.

    This kind of clever work and exposure! Keep up the very good works guys I've you guys to my personal blogroll.

  • Comment Link Maya Sunday, 12 November 2017 08:56 posted by Maya

    Hi there i am kavin, its my first occasion to commenting anyplace, when i
    read this piece of writing i thought i could also create comment due to this sensible post.

  • Comment Link Debbra Saturday, 11 November 2017 01:18 posted by Debbra

    I'm really enjoying the design and layout of your site.
    It's a very easy on the eyes which makes it much more pleasant for me
    to come here and visit more often. Did you hire out a developer to create your theme?
    Excellent work!

  • Comment Link Tosha Thursday, 09 November 2017 17:04 posted by Tosha

    Wow, incredible weblog format! How long have you been running a blog for?
    you made running a blog look easy. The full glance of your web
    site is excellent, let alone the content material!

  • Comment Link Gabriela Wednesday, 08 November 2017 02:57 posted by Gabriela

    Thank you for the auspicious writeup. It in fact was a amusement account it.
    Look advanced to far added agreeable from you! However, how can we communicate?

  • Comment Link Haley Monday, 06 November 2017 19:53 posted by Haley

    A person essentially help to make significantly posts I'd state.
    This is the first time I frequented your web page and so far?
    I surprised with the research you made to create this particular submit extraordinary.
    Great task!

  • Comment Link Vicky Monday, 06 November 2017 04:48 posted by Vicky

    Hurrah, that's what I was looking for, what a material!
    existing here at this webpage, thanks admin of this site.

  • Comment Link Ada Friday, 03 November 2017 10:39 posted by Ada

    Hello there, I found your blog by the use of Google even as looking for a comparable matter, your site came up, it seems
    good. I've bookmarked it in my google bookmarks.
    Hello there, just turned into alert to your weblog thru Google, and found that it is
    truly informative. I am gonna watch out for brussels.
    I will be grateful in case you proceed this in future.
    Many people will likely be benefited out of your writing.
    Cheers!

Leave a comment

Make sure you enter the (*) required information where indicated. HTML code is not allowed.