My hard drive resuscitation experience

    Probably, sooner or later this happens to everyone - once and I got a usb-hard drive.
    Somewhere in a hurry, he simply pulled the cord out of the USB socket on the laptop (as often happens).
    I come to work, I connect the HDD, and it is empty ...
    What to do !? What I did is read on.

    Of course you should not panic.

    First of all, you need to remember the main rule : the less manipulation you will make with the storage medium, the more likely it is to restore your information. No need to copy, cut, delete.
    There may be various symptoms of the “ illness ” of your media: some folders / files, copy errors, lost system will ask you to format your media, etc.
    Each case, of course, must be approached individually, so it is important to have several different tools / programs for testing.
    I always keep a folder with the main software on my laptops, home and work PCs, portable HDDs, which may come in handy someday. Well, of course, there were a couple of programs for working with hard disks and software for data recovery in stock.
    For example, there were: EASEUS Partition Master, Norton Partitionmagic, PartitionManager, Active File Recovery, Error Repair Professional, HDD Regenerator, HDDScan, Raxco PerfectDisk, R-Studio, Recover4all.

    Previously, I crawled into the EASEUS Partition Master and Norton Partitionmagic . The first is an almost lite and free version of the second.
    Programs showed the presence of media, but could not determine the type of file system.

    Sample program interface:

    The first thing, of course, is simply to format the media in the file system we need and it seems that we will get a working hard drive again, however, the information stored there was important to me, so I left the formatting as a radical method to restore my hard drive.
    Unfortunately, there are no screenshots of testing all the programs, but in the end, after sorting through the programs and reading the various forums for an hour, I downloaded another small utility from the network - testdisk .
    The program interface is in English, but it’s not difficult for a person who knows at least a little technical English.

    The “poke” method began to be picked in this program:
    1) We choose whether we need to keep a log. I do not need.

    2) Next, select the media that we will test.

    3) Choose the type of partition table. In my case, Intel.

    4) Next, we go to the menu with possible operations on our media.

    4.1 Analysis of the existing partition structure and search for lost partitions:

    4.2 Additional section - Utilities for the file system:

    4.3 Disk geometry:

    4.4 And the key section for us is " MBR Code ". Overwriting the boot sector.
    “Master Boot Record” - Main Boot Record, the first physical sector (512 bytes in size) on the hard disk.

    I’ve roughly poked around:
    I selected the necessary disk - Check sectors - Overwrite MBD - Overwrite the boot sector.
    At the same time, it rebooted once. The hard disk has returned to its original working condition with all the data.
    After this incident, I copied this console utility to my folders with the necessary software and for good reason.
    Soon my colleague asked me to see a computer - it stopped loading after a power surge.

    My actions:

    I connect it to another PC:
    The system sees the disk, but when I try to enter it it says that the disk is not formatted and offers to format it.
    I tried programs for recovering deleted or damaged files:
    A couple of programs (R-Studio, for example) even found all the folders and files, but restored them crookedly - not a single document was opened. At the same time, the program clearly indicated that the FAT file system was on the disk.
    The first thing that came to mind, most likely the boot sector of the disk (boot sector) is damaged.
    I left HDD Regenerator program overnight with checking and fixing bad sectors.
    In the morning I discovered a " blue screen of death " with an inscription like: "conflict with new hardware or software."
    I tried to cut down the hard one, pull out the battery from the motherboard to bring down the BIOS settings, well, and a bunch of all kinds of manipulations, including banal loading in safe mode. Nothing helped.
    Everything is as before: the system sees, but does not enter ...
    Then I made a series of manipulations similar to those that I did when restoring my usb-hdd and after 10 minutes the colleague’s PC booted up by itself.

    Chinese flash drive

    Recently I ordered a 32 gb flash drive from China, it turned out to be some kind of defective. At first, folders and files disappeared, then after formatting it generally stopped opening. I've been conjuring with her for several days now, but I just can't reanimate.
    So far I see only " Partition sector doesn't have the endmark 0xAA55 ".

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