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Introduction to Data Recovery

Info

  • Level: Intermediate
  • Presenter: Eli the Computer Guy
  • Length of Class: 30 Minutes

Tracks

Prerequisites

Students should have a solid understanding of how computers work, and should have experience troubleshooting and repairing Windows PCs.

Purpose of Class

This class introduces students to the concepts behind data recovery.

Topics Covered

  1. Lost Passwords
  2. Corrupted Files
  3. Deleted Files
  4. Physical Damage

Class Notes

  1. Password
    1. BIOS and Router type hardware can be reset manually
    2. Brute Force – A piece of software that tries Username/ Password combinations at random until it finds the right ones.
    3. Find Password – Some passwords are stored in a way that software can discover what they are
    4. Reset Password – For Windows Operating Systems you can reset user passwords.  Encrypted files will be unreadable
  2. File Corruption
    1. Easily fixed with $50 software
  3. Deletion
    1. Files are not actually deleted
    2. Recuva.com is a very good free tool
    3. Secure deletion makes files unrecoverable
    4. Stop using the computer if you accidentally delete a file.
  4. Physical Damage
    1. You need a clean room in order to fix a hard drive
    2. Expect to pay $1000-$3000 if hard drive physically dies
    3. Manufactures use different parts o the same model of hard drive
  5. Final Thoughts
    1. A good backup routine is the best bet


Eli the Computer Guy (437 Posts)

Eli the Computer Guy has 16 years experience in technology being the guy to fix "it". From the Army, to building out new satellite offices for the enterprise, to running his own shop with 9 full time employees Eli has real world experience with almost all systems that technicians will be working with. Eli has 1600 hours of formal technical beyond his Bachelors Degree in Criminal Justice on technologies ranging from Avaya PBX/ Audix to Microsoft, Red Hat Linux, MySQL, Cisco and much more.


  • Kendra

    Hi I have question about my external hard drive .. I use my Norton virus protection to back up my computer …but how can I tell if it worked…can just hook the drive to a new computer then open the files ? I just want to see that it really saving my files

  • Eli the Computer Guy

    You have to have Norton installed to be able to verify the backup happened. Your BEST option is to check the backup using another computer that has the same version of Norton Ghost Installed. You second best option is to use you compute to try to navigate through the files… You should be able to double click the Norton Backup file and navigate thorugh it just like it was another hard drive… And of course you can just check the logs…

  • LISBETH K. MIRITI

    wish to learn on-line

  • Paul Miningwa

    This tutorial is very informative..Kudos Eli the Computer Guy.

  • Some Body

    Not only do your videos provide a vast wealth of knowledge, about almost every subject I’m interested, but they also give people the confidence to go at it. Amazing.

  • Mike Johnson

    Thank you Eli for all your videos.
    I have a request, why don’t you make a class on Encryption(cryptography, hashing, symmetric etc…)?

  • yashwant

    how old data can recovered from a harddisk/pendrive..with which tool/software

  • Roy

    Hello Eli,

    Can you talk about advantage/disadvantage of Combofix.? Thanks

  • Patricia

    Excellent Videos.
    Maybe I’m thinking incorrectly here, but if I deleted a file, realized I deleted a file that I need and didn’t do anything except download software to recover it, is it possible that the downloaded recovery software will write over the space where my data is? If so, how can I get around the recovery software from overwriting the deleted data that I have to recover?

  • Patricia

    Ah, I should have watched the “RECOVER DELETED FILES” first because you talked about the possibility of installing the Recovery Software and the chances of it overwriting the section where the deleted data is stored. So, with that said…Thank You for answering it in that video.

  • http://na Tamesh

    during surfing on youtube i got a name eli, and the i visited this website and wow, how good you are.
    thankyou eli and thankyou everymanit.com that provide very important tutorial for us,
    Thankyou and best wishes

  • artifex

    hi eli. I had a burning question about data recovery but am unable to find an answer anywhere as it seems too specific:
    I did an experiment and encrypted a hdd with data in it(all different sorts of files, avi, mp3 .doc .txt etc.), then formated it and tried to recover the data within with a variety of different [free] programs. They each found a different number of files, but they all seemed to be “empty” (e.g. the recovered mp3 would play a file void of sound).
    In a nutshell my question is this: does encryption “corrupt” files in the event that they were to be recovered, or was it just the software was too unprofessional to get the job done? (I hope I was clear, and thanks for your time)



















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