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9
votes
1answer
234 views

What is the practical value of redundancy in zip files?

How is redundancy implemented in zipping, and how do I benefit from it? I'd assume it consists of something like storing the lookup tables twice so a single defect does not invalidate the whole rest ...
8
votes
1answer
3k views

How can I force Thunderbird to re-download a corrupted message from the IMAP server?

I have a mail message that is corrupted in Thunderbird, but correct on the IMAP server (which is Gmail). Is it possible for me to tell Thunderbird to discard its copy and re-download it from the ...
6
votes
1answer
112 views

Why are bits in an oddly-consistent position being flipped when I read files?

I'm trying to track down a data corruption issue that occurs on reads in Win7x64 and am out of ideas on what to try next. This originally surfaced when migrating ~2TB of data to a new home NAS; when ...
5
votes
3answers
579 views

Which archive file is best against file corruption? [closed]

I use my external HDD to back up my files but thousands of tiny files make search and copy functions too slow. I prefer to put my tiny files into 500MB to 4.2GB archives before sending them to the ...
5
votes
1answer
1k views

File copy program that generates checksums of the data while copying too

My question in short: is there a tool that copies a file from directory A to B while, simultaneously, generating the checksum of the file it has copied/read, without doing an extra read/pass just to ...
4
votes
1answer
2k views

How do I check if .wmv file is corrupted?

Whenever I try to play .wmv in an media player, it won't start playing by itself. When I slide the bar a little further only then it does. Could be the .wmv file corrupted from the beginning? How can ...
3
votes
3answers
15k views

How to extract corrupted RAR files

I try to extract a file from set of .RAR parts. I always get the following error: Corrupted so I tried many programs to extract the corrupted RAR files. I have 10 parts, each one 400MB big. The ...
3
votes
2answers
376 views

Does moving files around my computer causes data corruption?

I've got a silly question floating in my head: If I have a file in C:/test1 and move it to C:/test2 then to D:/Other and so on... again and again, may the file become corrupted? What about making ...
3
votes
2answers
514 views

Cause of disk data corruption?

I have had in the recent weeks several cases of data corruption that occurred while copying files from one disk to another. Question is: what can be the cause, and how do I pinpoint it? Some clues: ...
3
votes
3answers
2k views

File corruption after copying files in Windows 7 64 bit using two methods

I have 5000 pictures and other files in a directory taking up 35 GB. I want to duplicate this directory. Method 1: I do a simple copy and paste of the directory in explorer. I have the habit of ...
3
votes
1answer
744 views

Ubuntu mounts ISO but some files are unreadable

I'm new to Linux and just installed ubuntu 12.04 amd64 this month. I had failed to install Texlive with texlive2012 iso image. I used the recommended command to mount: mount -t iso9660 -o ...
3
votes
1answer
132 views

What is this character-set corruption? (ISO-2022?)

I have a text file from a legacy source which contains corrupted characters. At first I thought the corruption was just gobbledygook, but it appears upon closer examination that some of the corrupted ...
3
votes
2answers
5k views

All my folders and files on my flash drive have been renamed automatically and I can no longer open them… I need those files

I opened up my flash drive this morning and all of my folders and files are normal, except for one folder and all its included files, which is the most important folder. The subfolders and files are ...
3
votes
2answers
9k views

Is there a good, free way to fix broken/corrupt .wmv files?

I've recovered some files from an hdd that weren't supposed to be deleted in the first place, but they have seeking problems/crash the players. Since they have the right size, I'm thinking it might be ...
3
votes
0answers
719 views

repair corrupted PDF

I have already looked at: Repair corrupt PDF and Rescuing a possibly corrupt PDF in Acrobat I tried ghostscript on both OS X and Windows. OS X gs gave the following error: GPL Ghostscript 9.06 ...
3
votes
1answer
183 views

How can I extract data from non-corrupted .rar parts?

I have 15 RAR files with names like part 1, part 2 etc. Usually when I extract them, it combines them all into one folder. Now the the problem is: The first part is damaged and it is not extracting ...
3
votes
1answer
229 views

Recently-written files suddenly dropping to 4kb - OSX

I've got a bit of a problem here... I've got a render-farm full of machines that are writing to a central disk, and, sometimes, after it's written an image sequence (DPX files, 12Mb per frame), about ...
2
votes
2answers
442 views

Blank list of windows services

Recently when I open windows services (always as administrator) I get a blank list of services: When I try and click on one of the empty lines I get this "Script Error" message: This happens ...
2
votes
4answers
3k views

Recovering a corrupted .txt file

Well, my system crashed as I was saving a text file. When I reopened it, the data was unreadable (shows up as a bunch of ascii NULL characters) I'm guessing that there was a bit or two missing at ...
2
votes
2answers
225 views

can not turn off onscreen keyboard by ANY MEANS, for Windows 7

For months, I have been trying to turn off the onscreen keyboard and I have yet to find actual Technical Support verses user instructions. I'll make it simple for those who want to talk to me like a ...
2
votes
2answers
449 views

Why unrelated files get corrupted after a blue screen of death caused by audio drivers?

Yesterday while hibernating my Windows 7 computer, I got BSOD which complained about Creative sound card driver (ctoss2k.sys). I have been using this system for two years already and I haven't had any ...
2
votes
0answers
65 views

File corruption at end - file size exact multiple of 16384 [closed]

I have seen a number of corrupt data files recently - all from a single customer - that have what looks like garbage at the end. The files (including the corrupted data) are an EXACT multiple of ...
2
votes
1answer
99 views

File corruption detection strategy

due to current high price of hdds, I would like to switch from running RAID1 to JBOD + offsite backup (Backblaze). In theory it's a much better approach (if PC gets fried by lighting strike, I still ...
2
votes
0answers
244 views

Helvetica font only corrupted in Chrome on OS X [duplicate]

For the past few weeks, Helvetica has been corrupted whenever I use Chrome v23.0.1271.91 on OS X. I tested it in Firefox and any pages that use this font display properly. I used AppZapper to ...
2
votes
4answers
8k views

How can I recover a corrupted PowerPoint 2010 file?

I have a corrupted PowerPoint 2010 file that I need to recover ASAP! Are there any free recovery tools out there for this?
1
vote
3answers
589 views

Disk Corruption = Failing Drive/Bad sectors?

I recently replaced my HD with a SATA SSD since my previous one failed. My new SSD is a week old and Windows 7 is already reporting file corruption. The file system structure on the disk is ...
1
vote
2answers
751 views

Windows XP won't start up - file missing

This laptop was working fine. All of a sudden it blue screened. After the blue screen, when we went to turn the laptop back on, it would get to the Dell home screen portion where you can opt to go ...
1
vote
2answers
3k views

Photoshop CS6 Corrupted File recovery

Last night I was working on a client application mock-up in photoshop, but was goin to take a break from my work so I saved the .PSD file on my internal HDD and put my computer into stand-by mode once ...
1
vote
1answer
304 views

How to fix a (slightly) corrupted large word document

I have a 60,000 word document which contains a fair amount of formatting - in particular it contains many: Pictures tables numbered lists bullet-point lists sections/subsections/sub-sub ...
1
vote
1answer
1k views

USB Virus, “Program too big to fit in memory”?

I got an installer for a piece of software via usb from a friend.Now what was weird was that although my friend and I had the same OS, same brand of laptop and I had a newer version (though I don't ...
1
vote
1answer
3k views

Is not a valid Win32 application on a 64-bit machine

I get this error: iTunes64Setup.exe is not a valid Win32 application But I already work on a 64-bit machine and operating system (Intel Core I3 and Windows 7). What can be the problem?
1
vote
1answer
56 views

Microsoft Word file corrupted because I opened it in emacs

So I, being dumb, decided to open my history essay in emacs and tried to edit a word. So I removed a letter from my introduction, and I saved it. The next time I opened the file in word, it said my ...
1
vote
1answer
83 views

Will corrupted data always show up as corrupted?

I have the important data from my computer backed up on a USB flash drive. I know I probably should have backed it up to DVDs or something as well, but unfortunately, I did not. My computer was having ...
1
vote
1answer
798 views

Can a faulty/failing DSL modem cause corrupt downloads?

Let's say that a short in faulty home wiring partially damages the DSL port on a modem... where it still functions, but has intermittent issues. What kind of symptoms would this sort of damage cause? ...
1
vote
1answer
1k views

Recover Memory Stick which system is being only recognised as RAW partition

I removed my 8GB Memory stick Pro Duo (FAT32) from my Windows 7 laptop while it was being accessed and when i tried to put it back in to read something from it, it tells me I need to format it. it is ...
1
vote
2answers
16k views

Solving “Access is Denied” issue with WindowsXP

I have a Windows XP computer, and experienced a hard-freeze of my computer (keyboard/mouse not responsive) and was forced to re-boot my PC. Now I'm running into an issue attempting to access or ...
1
vote
0answers
15 views

Recover Corrupt Audio Data (files visible but not accessible)

I'm was doing PA and recording at a medical conference this weekend but have hit distaster with corrupt data. Was recording a .WAV file using a line into a Tascam DR-40 audio recorder. Recorded about ...
1
vote
2answers
31 views

Save uncorrupted information from corrupted files

My university network is terrible (around 1 Mb/s down) and has too much activity, so large files usually get corrupted when I try to download them. I've tried to download the same 2.8 GB file several ...
1
vote
1answer
1k views

Validate/verify PDF files integrity

Is there any tool which I can run on the PDFs archives (all directories) and finally it lists/identifies the corrupt/invalid PDFs? I have hundreds of PDF files (related to documentation etc.) on my ...
1
vote
0answers
518 views

Restore Samsung Recovery Solution Backup Files (.wcl, .w01) using other software

I know this is a common problem but I can't find a Windows solution online. My wife's computer was not working so we did a backup using Samsung Recovery Solution before doing a full restore as Basic ...
1
vote
0answers
73 views

how to ensure large encrypted files are not corrupted over time?

I created a 20GB truecrypt container file. I use it to store videos. I store it on an external drive that is always connected to my Win7 daily PC, and only occasionally mount this container file with ...
1
vote
4answers
746 views

Restore system settings after windows\systems32\config file corrupt

I have dual boot win xp system (both OS win xp).My Windows XP showed windows\system32\config\"some file" to be missing or corrupt. Without giving a second thought I booted to my working second win xp, ...
1
vote
0answers
17 views

How can I verify that my .mpg files are not corrupted? [duplicate]

Possible Duplicate: How to check the integrity of a video (avi, mpeg, …) file? I have a bunch of old home movies burnt to DVD's and CD's. I am in the process of moving them onto a file ...
1
vote
0answers
330 views

CIFS over AnyConnect, Mac to Linux = Corrupt Files

I have a friend who works from home. He produces files that he needs to upload to the company's server. He uses a Cisco AnyConnect VPN to connect, and then drags/drops the files to the server. To ...
1
vote
1answer
200 views

Word documents get spontaneously corrupted while editing in OS X

This has happened to me twice in the past two days: I'm editing a document in OS X Microsoft Word 2011 (14.1.0), and the document's characters spontaneously turn into gibberish (not upon loading the ...
0
votes
4answers
4k views

Why do large zip files become corrupted so often after downloading?

It seems that when I use a web browser to download a large zip file (2-4gb), I go to unzip it and viola, corrupted. This happens so often. Are browsers not reliable means to download a file (http) ? ...
0
votes
1answer
179 views

Backup / Disaster Recovery, should I store RAR-compressed files? [closed]

I'm in the process of recovering files from an accidentally formated Ext4 partition using Photorec. It had about 300Gb of data, of which I've already got hold of about 30Gb. So far, it seems to me ...
0
votes
2answers
1k views

Corrupted attachments in Thunderbird forward filter

I created a filter in Thunderbird 14 on client A that, when a certain rule on incoming mail is satisfied, the same mail is forwarded to client B and C. Matching mails received from A are always ...
0
votes
1answer
49 views

What is the probability of an uncorrected bit error occurring and not being caught?

So I copied a setup exe from a nas drive to two seperate computers simultaneously today, and they both wound up having the same issues. The Setup exe has been used for time out of mind (at least, ...
0
votes
3answers
471 views

How to speed up windows7 when hard drive is corrupted?

I have installed windows7 home basic with 300 GB SATA hard drive. It is very slow in booting and also running slow. Is there any way to check if hard drive is corrupted? and if so how to recover it ...