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I have this mp4 video file on one of my portable hard drives, which could not be copied.

It could be played perfectly directly from my portable hard drive but when I copy it to my internal hard drive, I will encounter an error something like Could not read file, I/O device error, can't complete the request. Error code: 1117 on Windows 7 (The error message is not in the exact words when it was displayed, because I run a Chinese system. But the gist is there.), when around 112 MB of this file is processed. The file has 249MB in total.

And I also tried on Mac, and tried using FastCopy on windows, the same problem occurs.

Is there a way to rescue this file?

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Seems like it's time to run a chkdsk /R and probably replace the hard drive. – Werner Henze Jun 17 '13 at 9:23
Yes, let me try chkdsk /R. I am thinking of replacing it, but I want this file back.. – larryzhao Jun 17 '13 at 9:26
FYI, looking up that error code on UK system you get: "The request could not be performed because of an I/O device error." you might have some luck googling that. – snowdude Jun 17 '13 at 11:32
@WernerHenze chkdsk /R did the trick, thanks, you may answer it, and I will accept that, for the future. – larryzhao Jun 17 '13 at 13:38
up vote 0 down vote accepted

Seems like the hard disk is defect and should be replaced as soon as possible.

You might try to run a chkdsk /R to recover bad sectors.

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