Does Win 7 erase files as they're being moved?

[borat]

Or does it wait until they've all been moved, then erase them? I was trying to copy a folder with about 4000 files from one drive to another and I accidentally started to move them when I meant to copy. I immediately noticed the mistake and hit cancel, then copied it. About 100 or so files made it through. Did those files get erased from the source or not?

I ask because the resulting numbers don't make sense (or I'm confused). More on that later!

 

[Munkus]

I believe that cancelling a bulk move command simply stops the process after the current file that Windows is moving. You shouldn't lose any data. Just copy the deleted files back from the new location to the original.

 

[borat]

I did an experiment and it turns out that the files get split up even if it wasn't done all the moving...

Here's why I actually made the thread (should have made a better title....) I was trying to copy Folder A from hdd1 to hdd2.

As I said, I mistakenly moved the folder and hit cancel about 10% of the way through, resulting in Folder B on hdd2. I should have just let it go and copied it back, lesson learned.... :/

I then copied what was left in Folder A to hdd2 resulting in Folder C.

I then merged Folder B and C, thinking the files that made it through (when I accidentally moved instead of copied) got moved and there'd be no overlap. There were no duplicates so it seemed I was correct.

I checked the total size of the merged folders and it was the exact same as Folder A. This makes no sense. If the files in Folder B got moved (which should have been the case), then Folder A should have less data then B and C combined.

I've thought about this for hours, and the only explanation I can think of is that maybe I copied the contents of Folder B back to hdd1 BEFORE I merged B and C but AFTER I copied A to C. I can't imagine I'd forget doing that, but I was kind of in a panic at the time...

Is there another explanation I just can't think of? I double checked all the folders and I don't think my story is wrong...

Of course, if you need better explaining, don't hesitate to ask!