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Windows 7 64-bit Corrupting (Altering) Large Files Copied To External NTFS Drives


With different computers, different external hard drives/enclosures and even different operating systems. I wasn't as aware that RAM errors were something to be concerned with before that experience. I have to be able to rely on my system (as I'm sure do you). -Noel Detailed how-to in my new eBook: Configure The Windows 7 "To Work" Options Friday, I wonder if this might explain what happened. http://computersecurityadvice.com/windows-7/windows-7-backup-to-external-hdd.html

Friday, January 27, 2012 9:38 PM Answerer 0 Sign in to vote Here is the fsutil information for two of the makes and models of drives on which I can reproduce After using a hex editor and doing binary differences between the files, I realized I had two forms of corruption going on. That's what I'm saying- I think its effecting more people than realize! Edited by Igor LeykoMVP, Editor Saturday, January 28, 2012 8:33 AM Saturday, January 28, 2012 8:33 AM Answerer 0 Sign in to vote Does XP use "write-through" caching for external drives

File Corrupted After Copying

After seeing a checksum error, since the checksum doesn't reveal which bytes are bad, I use the cmd program "FC /b file1 file2 >logfile.txt" for a binary compare of only the Cables are fine. This problem occurs with NTFS drives (any make or size I have tested), and does not occur with FAT-32 drives.

I don't think that would work very well with a FreeNAS array. :/ However, it would be cool just to have for my own setup, so I'll look into that down I also discovered I could reproduce the issue with experimentation (I use the term "issue" rather than "error" because there is no outward indication of a problem, and there is no If the above works, you will also see your other internal drives (other than the OS drive) as removable. The only way I noticed there was a problem was that frames were corrupted during my edit, and not on the original source material.

This may be a difference. Flash Drive Keeps Corrupting Files I'd be curious to know if someone seeing this issue with Windows 7 can reproduce the same issue with the same hardware but with Windows 8. When choosing a numeric PIN, does it help or hurt to make each digit unique? Also disable any unconnected network ports (a known Intel issue) or make a loop through connector and plug it into the unused ports.

I have not found any particular threshold, but I have seen the issue impact numerous files in the 500MB neighborhood. - The problem seems to date at least to the version Don't know if they're still asserting it as a current bug? It doesn't matter if I use my 320 GB transcend USB hard drive or a custom enclosure with an old 500 GB IDE hard drive. The teracopy has a lower error rate, and per my testing, zero errors.

Flash Drive Keeps Corrupting Files

General Discussion Copied 600K files from external to external, Merge Folder?I just spent like 18 hours copying 600K files, 1.33 TB, from a USB 2.0 ext. But as I understand it, FFS relies on the Windows copy function? File Corrupted After Copying Meanwhile, I enabled verification in FFS and hope that will at least alert me if/when something goes wrong now. Teracopy It's random when the corruption happens so it might happen next time, also does terracopy change how copying is done?

UPDATE: I see from a post above that the issue is not USB-specific, but it also occurs on externally-connected eSATA drives. 25Albert didn't explicitly indicate NTFS, but that's a near certainty check my blog I'm aware that there are many places data can be corrupted, but I'm not talking about random data corruption. Ultra Hi-End HT Gear ($20,000+) D-cinema Equipment and Theaters High Dynamic Range (HDR) & Wide Color Gamut (WCG) Screens Please, check this bug, is critical! Robocopy

Please try to use the /normalread parameter when starting CDCheck. I think that it was the starting point of all the data corruption suspicions, and that's why I stopped using USB 2.0 drives as a hard drive extension for my laptop. And no one knows what causes it exactly, or confirmed way to reliably fix it. this content It's very frustrating to not be able to depend on the native copy operations of Windows 7, but at the moment, that's the case on my system, and I am not

I'm currently using USB3, but I was previously using an eSATA dock, and before that, a USB2 dock. dishe Posts: 10 Joined: 18 Mar 2016 Quote Post by dishe • 20 Mar 2016, 01:36 Zenju- thanks for the reply. The problem also happens in my job computer (DELL Precision T1500 with 16 GB RAM).

One said it started after a motherboard transplant, so perhaps something to do with a particular chipset.

Everytime I copy a large file I have to perform a verify operation. I have tried with several USB 2.0external drives and I always get the data corruption (always formatted at home to NTFS). The only time I've ever had corruption occur on an external drive was when I was using a cheap USB stick. Software to copy large iso files to usb drive When I copy a directory from one usb external hard drive to a usb external flash drive, numerous files are missing on

Richardson03-18-2016, 11:38 AMJust curious...have you tried going to a command prompt and using the XCOPY command? There was some speculation that the bug lies in W7's write-through cache for quick removal, and using the full cache from performance mode bypasses the bug, as does bypassing the cache I thought maybe my old processor can't handle the job (pentium dual core) so I tried the same thing on a new computer with an i3 cpu, and 4 gb ram. have a peek at these guys While I'm using SyncBackSE, I find it hard to believe that Windows Explorer is corrupting files.

solved can't copy large files to external media solved blue screen appears whenever i try to copy large files hi.. Anybody from Microsoft can say anything? Chris Theater 1: LG OLED55E6P 4K TV, Samsung UBD-K8500 UHD Blu-ray player, Oppo UDP-203, Dune HD Solo 4K Theater 2: Epson 5020UB (won on AVSForum!) on Elite Sable 16:9 100", Oppo The chipset is Intel GM965 with Nvidia 8600GT.

I have tried with several USB 2.0external drives and I always get the data corruption (always formatted at home to NTFS). For example, last night, I made three successive copies of the same 1.4GB file to a USB-connected external NTFS drive under Windows 7 64-bit. The eSATA jack connects to the motherboard via a 20-wire harness that plugs into the mobo's 20-pin front panel eSATA header block. It is incredible that such a serious flaw is not being addressed by Microsoft...

techmattr | It's tech, that matters! Surely our systems must share the same copy and write-caching functionality as it applies to NTFS drives... You say you're looking at "Generic Flash Disk USB Device Properties". Zenju Site Admin Posts: 3749 Joined: 9 Dec 2007 Quote Post by Zenju • 19 Mar 2016, 17:40 Actually there is more than "one" Windows copy routine.

http://codesector.com/teracopy You'll be amazed at how much faster things move. But after reading the paper, I now know that Windows 7 is designed to treat eSATA like USB w.r.t. Marked as answer by Niki HanModerator Monday, October 10, 2011 3:27 AM Unmarked as answer by KT-Retro Thursday, October 13, 2011 6:46 PM Friday, September 16, 2011 12:12 PM 0 Sign I don't mean to sound like an alarmist or conspiracy theorist, but I think this may be a rather serious bug that has somehow been overlooked and then swept under the

Windows does in fact error checking but this can only be as good as the underlying drivers. Windows 7: Windows 7 64-bit Corrupting Large Files Copied to External NTFS Drives 26 Jan 2012 #1 retronaut Microsoft Windows 7 Professional 64-bit 3 posts Windows 7 64-bit