I am trying to copy a 1GB .vob file, and in the middle of copying it says "can't copy the file - retry?"
I can open the file and play it (at least part way). I imagine the file is damaged, is there a way to "fix" it ?
I don't think you can fix a corrupted file but you can copy it. Roadkil's Unstoppable Copier can recover every readable piece of a file and put the pieces together. Using this method most types of files can be made useable even if some parts of the file were not recoverable in the end.
Is there any way to "fix" a partially copied file? No.
You could attempt to recopy it.
If the original is damaged, you are more screwed then not. There is a host of data recovery software the that assumes the file was simply erased, not damaged bits.