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mgr.inz.Player

7z archive broken [how to fix]

5 posts in this topic

You got those errors while extracting archive:
- "Data error in ...... File is broken."
- "CRC failed in ....... File is broken."
- "Can not open file .... as archive"
or something similar.
 
 
You downloaded this archive with torrent client from official torrent file
- open your torrent client, highlight "Underhell" entry
- stop torrent
- click "Force Re-Check" (choose this from context menu)
- torrent client should check file and re-download missing pieces.
 
 
 
You downloaded this archive from moddb mirrors or other mirrors (posted in comments)
I know three methods.
 
- First:
download it again. Captain Obvious.
 
 
- Second (the fastest method):
move that file to another directory, for example to C:\repairing
make sure that file has name "Underhell_Chapter1_1.2.7z"
download official .torrent file, open it with your torrent client, set download directory to C:\repairing
torrent client should check file and re-download missing pieces.
 
If your ISP blocked BitTorrent traffic, try third method.
 
 
- Third:
You have "Underhell_Chapter1_1.2.7z" file
Download par2 file(s) created by me
place them next to corrupted 7zip archive
install MultiPar http://multipar.eu/ (associate with par2 file extension)
double click any par2 file, wait (verifying), click repair button.
Fixed file will be: "Underhell_Chapter1_1.2.7z".
You can try extract it.
 
Old file will be (if broken) renamed to Underhell_Chapter1_1.2.7z.1 ( ".1" at the end)
You can try with one par2 file (23MB file), if this is not enough, additionally download 46MB file and try again. If you downloaded all three par2 files, MultiPar will be able to repair/recover up to 10% of lost data.

Note1:
"repair" button, not the "recreate" button

Note2:
close 7zip or WinRAR before you start repairing.
 

 
 
Par2 files:
23MB par2 file DOWNLOAD LINK
46MB par2 file DOWNLOAD LINK
91MB par2 file DOWNLOAD LINK
(created with MultiPar 1.2.3.1)
 
 
Good luck.

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If 7z archive is corrupted or broken, you have still fair chances to recover data from it. I have been using a recovery tool that helps me recover my data from corrupt archive files. It is SysInfoTools Archive Recovery that supports recovery of corrupt archive files, like: ZIP, RAR, TAR, TAR.Gz and 7z.

You can also try its demo to check whether it can fix corruption or not.

Thanks.

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@JNJohn (or maybe you are a spam bot)

Well, just try this:

 

create about 1.5GB file, 7zip archive, maximum preset  and huge dictionary size (as big as you can). You can compress Win7 system files or whatever you want. Now:

 

1) open your fresh 7zip file with good hexeditor and remove last 10MB (about 10485760 bytes). That way you can simulate broken download from website. Try tool you suggested. It can not fix it.

 

2) open your fresh 7zip file with good hexeditor, overwrite about 20 bytes, just change original to 00, in random locations. That way you can simulate broken torrent download or damaged media like CD or DVD. Tool you suggested - it can not fix it.

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ZIP Files may get corrupt due to network failure issue or software malfunction, In this situation I would like to recommend Kernel for ZIP Repair tool. With the help of this application you can efficiently repair and recover corrupt ZIP archives and recovers all available files and folders from them.


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