Reading damaged disks. Utilities for resuscitation of damaged laser discs

The laser disc has undergone significant changes since its inception, evolving from a CD with a data capacity of 650 megabytes to a capacious Blu-ray capable of storing up to 50 gigabytes and more. However, despite such obvious progress, optical media has not gotten rid of many of the problems and shortcomings that have plagued it from the very beginning. For example, after recording another disc (even if the recording drive that was used was completely new), it is impossible to say with one hundred percent certainty that all the data was correctly copied to the disk. Another inconvenience of working with optical media is related to the growing volume of information. It has become many times more difficult to navigate which drive to look for a particular program or document on. And finally, the most important “disadvantages” of a laser disc are data loss due to mechanical damage (scratched surface of the disc) or as a result of a recording error. However, so far there is no serious alternative to optical media, so it is necessary to look for ways to solve these problems, at least partially. Utilities with which you can evaluate the condition of disks and recover data from them will be discussed in today’s review.

CDCheck 3.1

Developer: Mitja Perko
Distribution size: 1.5 MB
Spreading: shareware
Interface: Russian It is possible to draw a conclusion about the condition of the disk “by eye” only if obvious mechanical damage is visible on its surface, indicating careless handling of the media. The more scratched and dirty the working side of the disk is, the higher the likelihood of failures when reading data from the media. But even if, after the most thorough inspection, no cracks or scratches are found, this does not indicate that the data from the CDDVD will be read correctly by the device. Recording errors can also occur as a result of a software glitch or due to the failure of the recording device. Many people use a simple way to determine the quality of a recording - the media being tested is inserted into a DVD drive, after which the data from it is copied to the hard drive. The logic of this “test” is simple - if the data is copied, then the optical disk is in perfect order. Actually this is not true. The fact that the data was copied to the hard drive only means that some information was read by the drive, but the very fact that the copying process is completed does not guarantee that the data on the hard drive is completely identical to the data that was written to the media. You should also not rely entirely on comparing the sizes of the original and copied files - even if they match, the data may differ. Comparing data manually is inconvenient, especially when there are a lot of files on the media, so it is best to control the quality of recorded discs using a special utility such as CDCheck. One of the main functions of this utility is to determine the integrity of data on the media. For this purpose, the program generates a checksum for files and folders, a unique code for a particular case, by which one can judge the reliability of a copy of the data.

CDCheck works with different types of checksums - MD2, MD4, MD5, Adler32, CRC32, SHA (1, 256, 348, 512), Tiger (128, 160, 192), etc. Before burning a disc, the program can analyze the contents of the future media on the subject of compatibility of data recorded on CD/DVD with ISO image standards. Data verification can be performed either by checksum or by the “source-copy” principle. At the end of the scan, the program can launch an external anti-virus scanner, checking the content for viruses. CDCheck allows you to set the priority of a job, and also has a data recovery function by repeatedly reading disk sectors. When a certain percentage of reliability is reached, which can be set in the program settings, the data can be considered recovered.

By processing data with CDCheck, you can monitor detailed process statistics: average data reading speed, estimated data processing time, number of scanned files and folders. The utility supports command line operation and provides detailed information about the CD/DVD/BD media used.

DiskInternals CD & DVD Recovery 3.5

Developer: DiskInternals Research
Distribution size: 3.5 MB
Spreading: shareware
Interface: English A utility for recovering lost information from optical media is one tool from a whole set of various tools for recovering lost data that the developers of DiskInternals Research offer. This program can work with any optical media: from CD-R and DVR-R, to dual-layer discs and DVD-RAM. CD & DVD Recovery detects "missing" files recorded in ISO9660, UDF and Joliet systems. This data can also be recovered if the data was written to the disk in multi-session mode.

The operation of restoring damaged or deleted data is greatly simplified thanks to the step-by-step wizard included in the program. Following his instructions, you need to select the media whose contents are inaccessible, and then specify the parameters of the files to be restored. So, for example, for a more accurate data search result, you should determine the approximate size of the files to be resuscitated, as well as indicate the approximate time of their creation. These criteria are of particular importance when analyzing a disc with multiple recordings, on which there are many “traces” of old information once recorded on this medium. CD & DVD Recovery identifies the location of lost data on a disk and can work with long file names. The program provides access to files from any track, even if the session on the disk was not closed correctly.

CDRoller 8.0

Developer: Digital Atlantic Corp
Distribution size: 6 MB
Spreading: shareware
Interface: English The problem of unreadable disks has given rise to a mass of utilities created to solve it. Some programs are designed to test the quality of recording media, others are designed to read surviving information. Typically, this uses a multiple read method, where the program tries to copy the data from the damaged disk as accurately as possible. However, in practice, these utilities cannot always save the situation. For example, if the copied file is large and contains one or more unreadable fragments, then such data may not be suitable for further use.

The simplest example of such a situation is a damaged DVD with a movie recorded on it. As you know, the contents of the DVD-video format usually look like a Video_ts folder, where menu and navigation files are located, as well as large files with the .vob extension, which contain video and sound. If the unreadable area of ​​the disk is in the place where the vob file was recorded, this file will be partially damaged, resulting in a large fragment of the video being lost. It is possible to partially restore the remaining video. Firstly, for this you can use additional tools that can correct errors in the video file code. However, if the damaged area is large, then such utilities will not be able to cope with the recovery. Other programs that can fix a video file will use re-compression, which will inevitably lead to a loss of original quality. The CDRoller utility can solve this problem faster and more efficiently than many other programs. Having copied readable data from such a disk to the hard drive, CDRoller will analyze the vob file and divide it into separate fragments (movie scenes), saving them in the MPEG format familiar to the DVD video standard, without loss of quality. In this case, you can simply exclude the scene with the fragment where the defect is present, and record a new disc with the surviving data.

Thanks to the built-in recording module, the disc burning procedure can be performed directly in CDRoller. The program allows you to burn recovered files and folders, videos, as well as ISO image files.

The disk cataloging tool built into the program uses so-called short images (Short CD/DVD Image). In fact, these are not real images, but only data about the contents of the indexed disk - a list of all files and directories on the disk, with a preserved structure. Each time a new disc is read, the program can automatically create such a short image and write it to a specific folder, thus compiling a library of all discs. In the future, if you need to quickly find a specific file, you can use CDRoller to search the entire library of images. The data search tool is implemented very flexibly; the search query can be refined using various search criteria. For example, you can set the minimum and maximum size of the file being searched, define the subject of the search (for example, only folders, files, or both), specify the creation date, etc. Another feature of CDRoller is the ability to work with audio discs. Despite the relative durability of audio discs, sometimes it only takes one tiny scratch for a CD player to refuse to play a particular track or even recognize the disc. In order to save the recording, the program uses digital data extraction (Digital Audio Extraction). During the audio reading process, CDRoller can use jitter correction and also use sector re-reading to detect errors or loss of synchronization. The read tracks can be immediately converted into various digital audio formats - WAV, MP3, MP2, OGG, etc. The program can encode audio CDs on the fly, without creating an intermediate WAV file. To evaluate the quality of optical media, CDRoller runs a series of tests (the test can be started by selecting the drive from the list of available devices and using a keyboard shortcut), selecting a test method depending on the type of data recorded. The program checks the ISO 9660 file system and also checks the disk surface, after which it displays a detailed generated report on various media properties - the number of detected sessions, the program in which the recording was made, the size of the file allocation table, the list of unreadable folders, etc.

Please note that this check cannot be applied to disks with the UDF file system. Errors on optical media with such a file system are detected automatically. This data recording format is widely used by various models of DVD camcorders, DVD recorders, as well as batch recording applications such as Roxio Drag-To-Disc and Nero InCD. Users who have to deal with such discs often encounter a situation where the captured and recorded video is not played back. Typically, data recording errors occur at the session closing stage. They can be found when working with devices from a variety of manufacturers - Lite-On, Thomson RCA, Philips, Panasonic, etc. In most cases, CDRoller allows you to partially or even completely recover this data.

IsoBuster 2.5

Developer: Smart Projects
Distribution size: 4.8 MB
Spreading: shareware
Interface: Russian This program is a universal data recovery tool. Many users consider this utility to be the best tool for “fixing” unreadable data from optical disks and, I must say, for good reason. The program is updated regularly, and the long list of its features grows from version to version. At the moment, IsoBuster can resuscitate data from almost any media, including BD and HD DVDs.

The secret of IsoBuster's popularity lies, first of all, in the fact that this program understands all existing file systems that are used today to record data. The utility works with the contents of images; it can be used to mount images and extract data from them, as well as directly run files. The program supports the formats of all popular disc burning programs, such as CDRWin, CloneCD, DiscJuggler, BlindWrite, WinOnCD, NTI, Plextools and many others. IsoBuster can also be used to create an exact image of the source disk, and the image can be written in .iso, .bin, .tao formats, created with cue markings and a .md5 checksum to determine data integrity.

The program makes it possible to check the status of the media (you don’t even have to extract data to the hard drive) and can create a list of files containing read errors. If the program detects bad sectors when reading a disk image, IsoBuster can collect statistics of bad disk areas and save it to a separate file. If restrictions are imposed on the file system (for example, FAT), the created image files can be divided into parts, the size of which is specified in the IsoBuster settings.

Conclusion

Unfortunately, there is no such method that would guarantee 100% protection of data on optical media. Therefore, there is nothing left to do but handle the disk more carefully and always keep a backup copy of it “in reserve.” Well, if, despite the precautions taken, trouble still occurs, files from the disk are not copied or are not visible at all - it’s time to try one of the described utilities for recovering information from the media. We wish you to use these programs only out of curiosity, and not out of necessity.

Key Features

• comparative analysis of a CD-ROM with a copy stored on a hard drive in order to determine their identity (relevant for users who made backups in advance);
• checking the readability of a file on different media - hard, ZIP, CD, floppy, etc.;
• recovery of damaged files;
• saving diagnostic results in the form of text or table.

Advantages and disadvantages

• high performance;
• stability of work;
• the ability to recover information from disks lost for various reasons.

• if the damage is very severe, then the data can only be partially restored;
• If there are a large number of damaged sectors, the recovery process may take a long time.

Analogs

BadCopy Pro. A professional solution for recovering information from unreadable or hard-to-read floppy disks, CD/DVDs, memory cards and other media. The program works with all types of files.

ISO Buster. A functional package of tools that work with disk images and recover files from broken CDs and DVDs. Supports all image formats, works with optical media.

Recuva. A program that can recover lost data that was stored on damaged flash drives, external drives and other media. Can recover deleted emails and Word documents that were not saved. It has a fast and deep scanning mode.

Work principles

In order to diagnose bad sectors in one of the disk folders, select it and click on the “Check” button.

Setting up the scan

During processing, detailed statistics of the process will be displayed: the average speed of reading information, the estimated time for processing it, the number of scanned files. If an error is detected, the name of the broken file with its code will be displayed in the lower window.

Result of checking

To restore a specific folder or an entire disk, select the object, click the “Check” button and specify the location to copy the information. You can configure individual parameters: the number of repetitions for reading sectors, the level of correctness, etc.

Recovery setup

During this process, progress, files with problems and their status will be displayed.

CDCheck will help you quickly and easily recover important data lost due to damage to its storage media.

Bad CD Repair Pro
BadCopy Pro
CDCheck 3.1.10.0
DeadDiscDoctor 1.0
File Salvage 2.0
Non-Stop Copy v1.03
Roadkil's Unstoppable Copier 2.2
Skopin FileCopier
Super Copy2.1

Bad CD Repair Pro is a program for copying (extracting) any media files from bad (hard to read) CDs, DVDs, HDDs.
Features: ASPI Driver is used, support for ISO and Juliet CD file system, simple and user-friendly interface, high percentage of readability of bad data.

BadCopy Pro - A program that allows you to recover data from damaged storage media. BadCopy Pro is designed for automatic and fast data recovery. The program allows you to recover data from floppy disks, hard drives and CDs that are unreadable by the operating system. Recovery of various types of files is provided: graphic, text documents, executable files, archives, etc. An intuitive interface and step-by-step dialogues allow even computer novices to work with BadCopy Pro. In order to start recovering information from damaged media, you only need to go through a few steps of the Wizard, after which the program will start working automatically. If the media is severely damaged, then get ready for a long recovery procedure; it is not guaranteed that 100 files will be recovered.

CDCheck 3.1.10.0 - Works with all files, wherever they are located - on hard drives or CDs, floppy drives, ZIP drives, etc. Another application is comparing a CD-ROM with a copy located on the hard drive (produces a bit-by-bit comparison of files on the CD with their copies on the hard drive.

DeadDiscDoctor 1.0 - a program for copying files from damaged media. The idea is based on two types of errors (I/O error and file path error). The program reads the file in 10kb blocks and when the device (CD-ROM, for example) generates an error, the block size is reduced tenfold, the attempt is repeated, and so on until the data block is read without errors. If the block size reaches the minimum, then the program skips one byte and starts reading from the next. After successful reading, the block size increases tenfold and so on until it reaches a maximum of 10 kb.

File Salvage 2.0 - A program for reading damaged disks from the development team that gave us all our beloved Light Alloy.
The File Salvage program can copy any damaged files from any media. Unreadable clusters are replaced with zeros. During reading, you can stop the process and then start it again, even on a different drive.

Non-Stop Copy v1.03 - The program allows you to copy damaged files from any media, and unreadable sectors are replaced with zero bytes. Also,
tries to recover information from bad sectors. The program does not use any low-level methods for reading information, as a result of which it will work correctly on any type of media and on any file systems supported by the operating system.

Roadkil's Unstoppable Copier 2.2 - A utility that recovers data from damaged hard drives, CDs, floppy disks.

Skopin FileCopier - during my testing it didn’t show itself to be very good. When copying a good disk, the speed was very slow—it took 13 minutes to count a 700 MB disc with a movie. When copying a damaged disk, the processor load was 100. I didn’t wait for the copying to finish.

Super Copy2.1 - A very simple program that reads any disk in 20 minutes with large data losses, an ideal program for quick copying and if quality does not matter to you

Instructions

Typically, the main cause of failure is when reading information from disk but it turns out that it is contaminated. On the working surface there is a compact disk There may also be fingerprints or dried drops from drinks. Even one such drop can do disk unreadable.

First of all, carefully inspect disk and use a soft cloth and water to remove any traces of dirt. Wipe disk dry and try to start it. As a rule, in the vast majority of cases this is enough to disk opened normally.

In case you wiped disk, but it still cannot be opened; the reason may be scratches on its working side. Inspect the compact disk: if there are no deep scratches on it that have damaged the working layer (such damage cannot be repaired), you can try polishing the surface disk and a soft cloth with toothpaste applied to it.

Polishing disk, perform all movements only across the scratches, but not along them. Most scratches are along the paths disk and, therefore, you need to polish with movements from the center disk and to the edges and back. As a rule, half an hour of such work is enough to disk started to open again. Before checking, do not forget to rinse, dry and wipe it thoroughly.

If the procedures described above did not help, to save the recorded data, disk information, you should use special utilities. First you should try the simplest ones - for example, AnyReader, you can find this program on the Internet. It works well and quickly, allows you to restore files if the damage is not too serious disk A.

Launch AnyReader, select one of the recovery options, most often this is the first one - “Copying files from damaged media”. After selecting this item, click the “Next” button. The utility will open disk, mark in the list that appears the files and directories that need to be saved. Select a folder to save, click "Next". The copying process proceeds quite quickly; upon completion, the program will inform you about which files were recovered.

NSCopy, File Salvage, Max Data Recovery programs have similar capabilities. If you restore information from disk but their help did not work, use the wonderful IsoBuster utility. Thanks to a special operating algorithm, this program can recover information even from heavily damaged disk ov. The disadvantage of the program is that it works very slowly to restore DVDs. disk and it may take more than one hour.

Rescue if necessary disk with video recordings, try re-recording it using the Alcogol 120% program. This program can copy disk and, skipping erroneous sectors - if the corresponding checkbox is selected in the settings. Unlike programs where the absolute integrity of files is important, minor glitches during video playback are not so critical and are quite acceptable.

Reading, restoring and copying data from damaged data is one of the most common tasks when working with removable media. The number of proposed solutions is huge, but when trying to systematize, they all come down to a limited set of action algorithms.

Instructions

Try using a soft cloth (silk or cotton) to polish disk. It is not recommended to use circular movements; movements from the center to the edges are considered correct.

Wipe the disk with a special antistatic cloth and insert it into another drive (if possible).

Place the damaged dik in the freezer for 30 minutes, after wrapping it in a bag. Repeated attempts to read a bad sector cause heating disk, which causes a change in the refractive index. A cooled disk is less susceptible to heating, which may help resolve the problem.

Try using software (SuperCopy, BadCopy) to replace the values ​​of bad sectors with zeros or try to create an image disk using specialized applications (Alcohol, Ahead Nero).

Use utilities like Nero Drive Speed ​​or Slow CD to change (slow down) the reading speed disk or download the specialized Non-Stop Copy program, which does not require installation and is freely distributed on the Internet.

Unzip and launch the Non-Stop Copy application.

Russian | English installation and portable versions in one installer!

AnyReader- copies data from scratched CD/DVDs, unreliable LAN networks (Wi-Fi), damaged flash drives and floppy disks. The AnyReader program is designed to copy data from any hard-to-read or damaged media. AnyReader will easily and quickly read data from CD/DVD drives, LAN and Wireless LAN networks, flash memory cards, ZIP drives and other media available as a drive letter in MS Windows. The uniqueness of the AnyReader program lies in the ability to continue reading/copying information after reading errors have occurred or the connection has been lost in various types of networks (especially important for Wi-Fi networks). Important! Using AnyReader is absolutely safe and does not harm your data. The original files will remain untouched, AnyReader will save new copies of the files to the location you specify.

System requirements:
Windows® 10/8/8.1/Vista/7/XP

Torrent Copying damaged CD/DVD - AnyReader 3.18 (Build 1140) RePack (& ​​Portable) by ZVSRus details:
Program features:
Reading files from physically damaged disks
Ability to copy files from disks with scratches, bad sectors or errors
Reading data as much as possible
Reading data from untrusted networks
Support for sizes exceeding file system limits
Easy to use and intuitive interface in a step-by-step Wizard format

In what cases can AnyReader help?
You have a scratch on the disk, or it is partially damaged, and you really need the information recorded on it;
Your Wi-Fi or other LAN connection is constantly interrupted due to reasons beyond your control, and because of this you cannot download a file on the network;
Standard Windows copy methods do not cope with the task and abort the copy process.
You have two non-working copies of a file that you want to merge into a working copy.
And also in many other cases...

Description in English:
AnyReader - Reading from scratched CD/DVDs, unreliable LAN (Wi-Fi), damaged floppy/flash disks! Effectively copies corrupt data from any type of disks or erroneous connections if standard copying methods fail. AnyReader supports resumed downloads from the remote PC if the connection was broken during the copy process (especially useful for unreliable Wi-Fi networks). AnyReader is great for copying files from scratched CD/DVDs or defective floppy/hard disks. Normally when your computer is unable to copy files from a damaged disk it will abort and delete the part of the file it has copied. AnyReader will continue copying the file right to the end; any data that hasn't been recovered after several retries is replaced with blanks. This will allow you to effectively read every byte of information that can be read at all. Note: Using AnyReader is safe and risk-free. The software does not write data to your original disks, but saves the recovered data to a new folder that you specify.

Here are some situations where AnyReader can help:
Your CD/DVD drive can't read bad, scratched or trashed disks;
The standard copying method fails because of an error, such as "(Bad CRC) A cyclic redundancy check (CRC) checksum error occurred", "Cannot read from the source file or disk", an unknown error or a bad disk;
You have 2 bad copies of a file that you would like to put right;
You can"t download a file across wireless LAN because of a bad connection;
And many more of those...

What's new in version 3.18:
+ Improved bad sectors handling
+ Improved overall speed of disk reading
- Minor corrections and bug fixes

Features of RePack version:
Type: Installation | Unpacking. (Portable version from ZVSRus)
Interface language: Russian | English
Activation: Cured (Keygen and Patch-BRD)
Cut: Other localizations.

Command line switches:
Silent installation of the Russian version:/VERYSILENT /I /RU
Quiet installation of the English version:/VERYSILENT /I /EN
Quiet unboxing:/VERYSILENT /P
Do not create shortcut(s) in the Start menu:/VERYSILENT /I /NS
Do not create shortcut(s) on the Desktop:/VERYSILENT /I /ND