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Konstantinos Tsoukalas

Konstantinos is the founder and administrator of Since 1995 he works and provides IT support as a computer and network expert to individuals and large companies. He is specialized in solving problems related to Windows or other Microsoft products (Windows Server, Office, Microsoft 365, etc.).


  1. Ann
    January 18, 2024 @ 4:29 am

    Great utility! Is there a way to use TestDisk to remove the files from the corrupted disk? I'm copying groups of folders/files at a time to another drive. I'd like to delete the files/folders as I go.


  2. Franco
    October 24, 2023 @ 6:37 pm

    Is it possible to copy the files to be recovered within the partition itself but with the file system restored? It happens that in Linux the partition appears but it tells me "unknown format" when it was originally NTFS.

    It broke in a partition resizing process, the power went out in the middle of the process and it was damaged.


    • lakonst
      October 25, 2023 @ 9:24 am

      No, it is not possible and it is not safe to copy the recovered files to the same disk.


  3. hwertz
    January 28, 2022 @ 7:09 am

    Just to point out, testdisk exists for Linux too, over the years I've had 3 or 4 drives where they really went to lunch, start getting plenty of read errors. testdisk to the rescue! If you have a few bad sectors, fsck (linux scandisk/chkdsk equivalent) works a treat, it uses a spare copy of whatever filesystem info to rewrite the bad sector, the drive either finds the sector isn't bad once it's written to it, or finds it still is bad and maps it to a spare. No more bad sector and you're good.

    But if you start getting disk-failure quantity bad sectors, fsck just makes things worse, current drive I'm recovering fsck put ore and more stuff in lost+found, then deleted the root directory "/", so Linux will not mount it. Testdisk doesn't care though, the stuff is stuck in lost+found but on this filesystem Linux won't even mount, it's only had 1 error and like 20000 successful files recovered so far (4TB disk so it'll take a while.)


  4. asdfasdf
    May 6, 2019 @ 1:58 am

    Nice guide, thanks.


  5. Leonardo
    October 25, 2018 @ 1:18 am

    Test disk does not find my drive letter E:, what can I do?


    • lakonst
      October 25, 2018 @ 9:52 am

      @Leonard: If Testdisk is unable to identify your drive, the damage on the disk is serious and you will not be able to retrieve files. However you can try with another program to recover your files. For that task see this article: How to Recover Data from RAW Hard disk, USB Disk, SD Card


  6. etako
    July 14, 2018 @ 2:01 pm

    Hi, my external disk was found, but after "proceed" was message – partition: read error, after "quick search" – no partition found or selected for recovery, after "deep search" – nothing. Is it possible to do something?


    • lakonst
      July 16, 2018 @ 10:30 am

      @etako: Unfortunately No. The disk is completely damaged.


  7. Arruouelle
    July 10, 2018 @ 2:26 am

    It didn't work with my pasword-encrypted Buffalo HD-PNTU3. My files are recognized in the disk but nothing fixed up after rebooting PC. Is it because of the password?


    • lakonst
      July 10, 2018 @ 9:03 am

      @Arruouelle: Of course it is because of the password-encryption.


  8. Daniel Zajac
    November 14, 2017 @ 10:49 am

    After i copy the folder i want to recover it says i dont have permision to open that folder.. I dont know what else should i do..


    • lakonst
      November 14, 2017 @ 5:31 pm

      @Daniel Zajac: You have copied the folder or not with TestDisk?


  9. Pucca
    February 13, 2017 @ 11:05 am

    Hi, I could locate some directories but not the recent folder that I created in the last few days, which is the folder that i want the most… It was in an external hard drive and automatically detected "none" as non-partitioned. (Pressing the Down Arrow key would have no use since I can see all the directories within half a screen). Any idea how to recover the folder i saved yesterday? Thanks!


    • lakonst
      February 13, 2017 @ 3:32 pm

      @Pucca: in which location you have created the folder? the only method to see all the listed files is by using arrow keys. Can you use the arrow keys in another program?


  10. Shireen
    October 25, 2016 @ 5:38 pm

    This worked! Thank you so much!!!


  11. Paul Lundstrom
    October 18, 2016 @ 4:50 pm

    My Win 7 Home Prem. 64-bit laptop HDD became unbootable.
    I removed the HDD and mounted to a USB docking station, connected to a Win 7 Home prem. desktop PC (where the drive showed up as F:\), tried to read file structure and got the "must be formatted" message. Tried the technique at Disk management result:

    (F:) Layout:Simple Type: Basic File System: RAW Status: Healthy (Primary Partition) Capacity (and Free Space): 687.55 GB %Free: 100% Fault. . .: No Overhead…: 0%.

    Unsure what RAW meant, I proceeded to use testdisk. At step 6, "{None ] Non partitioned media" was pre-selected. This was the first departure from the scenario in the article.

    I changed the selection to "Intel" and ran steps 7 and 8. At step 8 (quick search) the program began testing the "cylinder(s) as shown in the image for Step 10 (not 9) Case 2, part d. One error message was generated early on (the first 5% or so) which disappeared after the scan completed. At 100% I got this from disktest:

    Drive F: -738 GB / 687 GiB – CHS 89753 255 63
    Partition Start End Size in Sectors
    !(no entries in these fields)! and the following choices at the bottom:

    Keys A: add partition. L: load backup. Enter: to continue

    I'm not sure how to go forward from here without losing files. Deep Scan? Something else?


  12. Charles Sikwila
    May 8, 2016 @ 10:12 am

    I managed to recover a few files that came on the screen. The rest of the files the files did not come on the screen.


    • lakonst
      October 4, 2016 @ 5:25 pm

      @Charles Sikwila: Use the Down arrow key, to see all the files.


  13. stinky pinky
    March 20, 2016 @ 12:31 pm

    hello this all work when i go into deep search. i can see all my files i need to copy but when i go to copy them to a new folder in my desktop it fails to cop the files.. what is my next step


  14. rasel
    September 6, 2015 @ 5:10 pm

    its working fine … thanks … :)


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