Why my copied files got corrupted

laichungleung
laichungleung Member Posts: 3 New User

Windows 7, 64 bit, acer AS5552-N974G32Mnkk.  I normally don't do any "backup"  But when I tried it wasn't working.  I use a USB 3 powered 1 terabye drive as my destination.  Unfortunately almost all of the copied files became corrupted.  The USB drives have no problem with my 2 other Win7 32 bit machines.  The only difference is this is an Acer and is 64 bit.  I did some Google search.  It seems like others are experiencing similar problems.  Files got corruped when copying from HDD to an external USB drive.  I tried changing from the default Quick Removal to Better Performance to no avail.  The only time that it did copy correctly was when right after I rebooted the machine, but then I couldn't conclusively say 100% that's they were all good as I have 100s and thousands of copied files, but I think they were as all the JPEGs file I checked looked good.  Other times, many of the files were corrupted to the extent that chkdsk /f would have to fix it and in the end, the whole USB drive demanded a format to be able to use again.  I once spent like 10 hours formatting the drive.  Now I dare not try to do a copy again using the Acer as it may very likely corrupt the entire drive again.

I checked Acer's website, there doesn't seem any update for that particular model and my BIOS is the latest.  Since the drive works flawlessly with at least 2 other machines, so I tend to think the ntfs FORMATTED USB drive isn't the culprit.

It's been very frustrating.

I used robocopy to do it

for %%x in (jpg nef avi mpg pdf doc mov m4a mpeg jpeg) do robocopy c:\Users\yyy i:\acer\yyy *.%%x /MT:20 /xo /s /z /r:0 /w:0 /v /tee /log+:i:\acer\yyy\robocopy.log

Appreciate any help.

Thanks.

 

Answers

  • Juzzo
    Juzzo Member Posts: 117 Troubleshooter

    Did you click the "safely remove device" icon in the lower right tool-bar when you unplugged it?

    Its not always needed, but when copying lare (and large amounts of) files, it can be.

  • laichungleung
    laichungleung Member Posts: 3 New User

    I did just that.  Still no good.

  • Alan-London
    Alan-London ACE Posts: 793 Pioneer

    I've no idea what robocopy is but perhaps the problem is with that.

    Do you still get corruption when using 'copy' from Windows Explorer?

     

  • laichungleung
    laichungleung Member Posts: 3 New User

    Xcopy, same problem.  Even a copy and paste can create that problem.  File size doesn't seem to be a factor, some of my jpg files are more than 2MB, same problem.  I searched this problem it seems like nobody has a resolution.  Some people say change it from Quick Removal to Better performance.  No good for me.  The only time it worked is right after a reboot.  I am not sure it's a hardware issue or a Windows 7 64 bit issue or some combination thereof.  I tested the USB drive, did Quick Format and Format (10 hours or more), work flawless with other PCs.

  • Juzzo
    Juzzo Member Posts: 117 Troubleshooter

    http://en.wikipedia.org/wiki/Robocopy

    Its a cli command for copying, secret computer nerd stuff. (Im in the club..heh)


    As to the issue at hand, Im not to sure what could be causing it...Possibly..

    --Some issue between 32bit and 64bit ? (Low chance, but not out of the question...maybe a driver issue?)
    --Bad USB 3 port? (Ive heard of sillyness going on with those USB3's)


    How old is the 64bit? is it loaded with stuff? Possibly something running (Malware or something) that is screwing with the copy over?




    (Posted on top of you, apparently you are thinking along the same lines)

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