Saturday, August 14, 2010

Recovering Data From an Inconsistent Zip File

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The Zip file format is a data compression and archive format. It is used to reduce the size of original data. It contains one or more than one files that have been compressed to reduce the size of the file. Zipping a file means that you are reducing the size of your original data into small size. The zipped version of the file has a.zip extension.




Suppose you have a doc file of approx 12MB (Megabytes) and you want to send it to your friend through e-mail. But the problem is that this file is taking too much time to upload. Then you can use ZIP to reduce the file size. Your original file will be reduced to 4-5MB. Microsoft has included built-in ZIP support for all the users (under the name "Compressed folder"). It is available in all the products of Microsoft since 1998.



Advantages of.ZIP file

• You save storage space. Zipping large files can save up to 80 percent or more in hard disk space.

• Smaller file size drastically reduces e-mail transmission time.

• The smaller file size of e-mail messages that you want to keep is useful when your mailbox has a space limit.

• Zipping allows you to encrypt private data, helpful when sending such data over internet.



Disadvantages of.ZIP file

It may not be possible to extract all of the files from the file correctly. Damaged data can affect the entire Zip file, multiple files, or just one file.

But sometimes these files corrupted due to some virus attacks, power failures or incorrect operations made by applications. It may cause severe data loss to the individual or a corporate. In these situations of losing data we can use third party tools which solved our problem by applying sophisticated recovery algorithms. Tools like ZIP Repair are effective for this purpose.



Following errors are encountered when ZIP is corrupt

• "Unexpected end of archive" error while opening ZIP file.

• WinZip Self-Extractor Header Corrupt. Possible Cause: Bad Disk or File Transfer Error.

• Zip file corrupt -- Cannot open file: it does not appear to be a valid zip archive.

• CRC (cyclic redundancy check) error.

• Compressed (ZIP folders error) -- Compressed (ZIP) folder is invalid or corrupted.



These tools effectively deal with all the above mentioned errors and recover the maximum possible user data in no time. These tools are non-destructive in nature i.e. they do not delete or modifies the existing files and folder present in the zip file. They just extract the data at user defined location. These tools are the only solution for the recovery of corrupt Zip file. Just use them and get your data back.



By Sem Johnson

2 ความคิดเห็น to “Recovering Data From an Inconsistent Zip File”

  • October 10, 2010 at 1:54 AM
    Alex says:

    Several days ago I was at the I-net and perceived there a lot of interesting softwares, one of them surprised me a lot, because of it restored my old damaged zip files. Besides it showed some interesting opportunities - repair zip file cyclic redundancy.

    delete
  • November 1, 2010 at 5:19 AM

    If you are asking about of zip repair software. Then Zip Repair software is rated as smart data recovery software in most of the online software selling & downloading sites. Try it..!!

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