Treatment of zip archives. Effectively recover damaged zip files
Instructions
Run Winrar to repair the damaged archive. Navigate to the folder it contains using the built-in explorer. Select the desired archive, right-click on its name, or in the “Operations” menu, select the “Restore Archive” command. You can also start rar archive recovery using the Alt+R key combination.
A window will appear in which you specify the folder where the recovered archive will be located, and also select its format (rar or zip). Set the necessary parameters for restoring the rar archive, click the “OK” button. The recovery time will depend primarily on the size of the archive file being restored.
Download a special utility to restore archived files if this could not be done using Winrar. To do this, copy the link into the address bar of your browser http://www.recoverytoolbox.com/download/RecoveryToolboxForRARInstall.exe. The program must be registered to be able to save recovered files. The demo mode will only allow you to analyze files in a damaged archive.
Install and run the Recovery Toolbox for RAR program, a program window appears in which you need to select the file to restore, to do this, click on the button with the image of an open folder, select the damaged archive in the window, click “OK”. The file will be added to the program, click Next. Next, the analysis and scanning of files in the archive will be launched. In the next window, mark the files from the list to be scanned and click Next.
Pay attention to the color of the exclamation file, which is located next to the file name. If it is red, it means the file cannot be restored, and if it is blue, it means the file will be restored without errors. In the next window, select the folder where you want to place the recovered files and click OK.
Sources:
- rar archive recovery
- Restoring a damaged book
Archiving– a convenient way to store data in a compressed state. However, sometimes when you try to unpack an archive with the information you need, you may encounter that the archive turns out to be damaged. There is a way out of this situation, and you can try to recover important data by restoring the archive using the WinRAR program and its built-in tools.
Instructions
Open the non-working archive in WinRAR. In the program menu, select the “Commands” section, and in the list that opens, find the “Restore archive” option. You can also call the restore command by pressing the Alt+R key combination. The recovery window will open - confirm it by clicking OK, and then wait until the archive recovery operation is completed.
The archive will be saved as a copy in the same folder in which the damaged archive was stored. You will recognize it by the inscription fixed that appears in the name.
In most cases, this method helps to recover all lost data. Therefore, if you have downloaded archived information that you have been looking for for a long time, and the archive refuses to work, do not delete the downloaded file and do not immediately start looking for an alternative to the unsuccessful download.
If a password is not required when starting the archive, update WinRAR to , and also update the version of the program you use to download files. It is possible that the archive itself, posted by , is not damaged, and it received damage due to incorrect downloading.
You may have already encountered a situation where something downloaded from the Internet or recorded on CD-disk or flash drive ZIP
- the archive did not want to open, displaying a message about some kind of damage. Damage to archives is not such a rarity; they all have a clear sequential structure, so even the smallest change can lead to the fact that the archive will not be opened by the built-in ZIP
-Windows archiver, not third party
.
The reasons for archive damage can be different. If you downloaded it from the Internet, there could have been a banal connection failure, as a result of which the archive turned out to be under-downloaded; damage to the archive can occur when it is written to damaged media, disks with file system errors. A sudden shutdown of the computer can also cause damage, especially if the archive was currently open in some program.
Agree, it will be very annoying and insulting if an archive with important data suddenly turns out to be damaged. However, you shouldn’t despair, because it can be restored. For these purposes there is a special program -. This tool allows you to repackage broken archives so that they can be opened by a regular or third-party archiver. The procedure for restoring archives in is fully automated and does not require any user skills.
It consists of three stages.
First you need to press the button "Next" in the window of the running utility, on the second - indicate the path to the damaged archive, as well as the path to the directory in which it will be restored, on the third - click again "Next" And "Finish". The program will view the contents of the archive, extract it, immediately repack it and save it with the same name and prefix "recovered" , so all you have to do is unpack it in the usual way.
So, the archive itself has been restored, but what about the files it contains? Unfortunately, if the archive did not contain redundant information, it will not be possible to restore all the files, since they simply will not be extracted. If the damaged file still needs to be extracted, you can try restoring the archive with the program Recovery Toolbox for ZIP. Unlike , this tool performs a deeper scan of the contents of archives, allowing you to extract files with minor damage.
However, you need to understand that even if extracted, the damaged file will remain damaged, since the program simply has nowhere to take the lost sequence of bytes from. Therefore, there is no guarantee that it will be correctly processed by the application for viewing it. Besides Recovery Toolbox for ZIP costs $27 , and this is too expensive for a one-time use, unless you have to deal with damaged archives constantly.
Note: file extraction will be complete if only the header and service information of the archive are damaged, and not the packed data itself.
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I had such moments when I could not unpack the archive, and all because it was damaged. This has happened more than once, and after analyzing it I realized that other Windows users have the same problem. Fortunately, this problem can be quickly resolved, but not completely.
In this article I will describe a method that will allow you to fully or partially restore damaged archive files using the archiver itself. We will work with ZIP and RAR archives, but restoring archives of other formats is done according to the same principle. Most likely you already have an archiver installed, otherwise how would you know about the generated archive. For example, it could be one of the most popular archivers - .
Unpack the damaged archive in two stages, in the first we will begin restoring the archive, and in the second we will begin extraction. Unfortunately, I do not guarantee 100% recovery and unpacking.
Restoring a damaged archive
We will restore the archive using WinRAR as much as we can. You can try using another archiver.
First you need to launch the archiver, you can simply launch the program icon. Then you find the damaged archive, select it and in the control panel press the button " To correct"(first aid kit view button).
If this button is not visible, you can press Alt+R.
After clicking the required button, a window will appear showing the recovery options. In point "Archive type" choose RAR or ZIP, depending on which archive is damaged, then choose which folder it will be saved in.
The recovery process will begin. If the file is large, then you will have to wait longer.
The recovery attempt may fail. In this case, it will not be possible to extract all the files from the archive, but we will try at least some of them.
Unpacking the damaged archive
Right-click on the archive and select "Extract files…". A window with parameters should appear where we specify the path. Be sure to check the box next to "Do not delete files extracted with errors", and now click OK.
This is interesting:
The extraction process will begin. As I already said, there is no complete certainty that all files will be restored and extracted from the damaged archive, but we tried, I hope everything works out for you. The article is short but clear, I’ll try to find more information about effectively extracting files from an archive.
Very often there are situations when the necessary information in the archive is not available because it is not unpacked. At the same time, an unpleasant message appears: “ archive is damaged" We offer several ways to solve this problem.
You must have the Winrar program installed on your computer.
After all the steps taken, a window will appear in which Winrar will ask whether to treat zip or rar. Choose the type of format in which you have a problematic file. Further indicate the location, where to place it, press the button OK.
We wait for the process to complete and try to open the archive as usual. If the file is very large in size, you will have to wait a little. Does not work? Most likely you will have to use other possibilities.
You can also try extract documents in parts from a damaged archive. You will need:
It is, of course, possible that there will be several files or no files at all, but you will at least get those that can be extracted.
In order to increase the likelihood of unpacking, you must, before adding files to the archive, specify recovery information. Especially for very important documents. The procedure will take you a few minutes, but in the future there will be no problems with opening and restoration.
It's not difficult to do this choose the desired object, right-click on it, select “ Add to archive" A window opens in which we put a checkmark next to the item “ Add recovery information». 
After that, go to the tab in the same window Additionally. Here you will need to set the recovery percentage, I advise you to set it to more than 3% for a positive result. Next, click OK, wait while the utility archives the files
We use 7Zip
If the above listed manipulations did not help you in any way, do not hesitate to download a powerful archiver 7Zip. It is free, effective, as it supports a huge number of different formats.
You just need to select the right version that suits your computer, 32-bit version of the system or 64-bit. Download the program, let's launch. In the window that appears, you need to specify the path to the file that is damaged, click the button Next, as shown in the figure below. 
There is another option to recover damaged files using the program RAR Recovery Toolbox.
But I want to warn you right away that the program is paid, if you don’t want to pay, you can look for the Portable version.
The program is very simple to use, understandable, launch it, press the button Next, following all the requirements.
Program Hamster Free Zip Archiver also intended for creating and opening archives. Unlike Winrar, it has a beautiful interface and a clear menu. But it can only create zip and 7z formats. It only unpacks archives in rar format. You can try opening a damaged archive using it. It has been noticed that for most people these attempts are successful.
When you see a message: “data error, perhaps the zip archive is damaged,” and the file in it is very necessary, there is nothing to rejoice at.
It’s good if there’s another one in stock somewhere or you can download another one online, but if not, it’s a shock.
Usually the 7 zip program works with this type of container, although there are many others.
So, you received error 42125, the zip archive is damaged or the archiver is simply unable to extract the files because it is in an unknown format - let’s try to fix it.
How to open a damaged zip archive
Such twists of fate with a file in the ZIP format, one of the most popular for processing compressed data, which for some reason is incomplete or damaged and cannot be opened is not uncommon.
Just before you remove it from your computer, since it is unusable, I suggest you try to restore it using the ZIP Repair program.
Recovering a damaged zip archive using the program
The program is free and very easy to use - you can download it right here using the link below or from the author’s website.
The entire repair process consists of several stages under the guidance of a software assistant.
The recovery process uses two buttons. The first (the one above) is viewing the damaged archive, the second is the save location after it is restored.
After indicating to the program the damaged archive or its location and clicking next, in the next window the program will display all its contents, plus the status of each file separately.
The repair process is quite fast and makes it possible to restore damaged files for viewing. Good luck.
Developer:
http://www.diskinternals.com
OS:
XP, Windows 7, 8, 10
Interface:
English
