Invalid MS-DOS Function

millsd44

millsd44

millsd44

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16 Mar 2012
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174
Hi guys, I recently bought a new HDD (this one) for use as a media drive. It installed and formatted fine.

However, when I come to copy across some media files (.mkv) they all seem to be copying at ~70MB/s apart from one file, where I get a box saying "Invalid MS-DOS function". I get the options to skip, cancel or try again.

Any ideas? I've done a quick google search however they all seem to suggest no read/write permission or are going along those lines. However this particular file is not open in any program or is not being used in any way.

I've never seen this error before in my 15+ years using windows so I'd appreciate some info on what it actually means?

If it helps, I'm using Windows 7 x64, the file is approx 1GB (a film), both the source and destination HDD's are connected through sata 6gb/s and neither are my system drive.

Thank you
 
Both disks formatted as ntfs? No odd characters in the filename? If you copy only the problem file when does the error appear - start, middle or end of the transfer? How are you doing the copy, drag & drop in explorer?
 
Both disks are formatted as NTFS yeah, I've renamed the file "1.mkv" just for ease of use.

The problem occurs when I'm copying about half way through the progress bar. I'm using ctrl+c, ctrl+v in two different Windows Explorer windows.

I've just tried copying through command line as well - it states "Incorrect Function, 0 files copied" after thinking about it for 5 or so minutes.
 
I wonder if the file contains a bad cluster...

you could run a full scandisk on the source disk but that'll take a while. Do you have another copy of the file you could use instead?
 
No other copies of the file, but I do have the DVD on the shelf...I think I'll just bite the bullet and rip it again on the new disk.

Just curious, but what do you mean by bad cluster? It plays in VLC absolutely fine, just seems to break down when copying. It won't even create a copy of the same file on the source disk, i.e. "1 (2).mkv"

Thanks for the replies!
 
millsd44 said:
Just curious, but what do you mean by bad cluster?
Click to expand...
it's possible that part of the file is on an unreadable bit of disk although the fact that it plays ok tends to suggest the disk is ok.

The fact that it starts copying says that its not permissions or anything. If it fails consistently then the problem is at the source end rather than the target.

at this point I'd be weighing up how long a re-rip is going to take vs how long you want to spend chasing this problem
 
Re-rip done.

Funny thing is, explorer wouldn't even delete the file. The only way to get rid of it was to format the disk (I'm selling it now anyway).

One of those things I guess...who knows.
 
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