I was copying my whole user folder over to a harddrive for backup, but I had to plug out the disk because I had to leave. I got about 160 of 220gigs transferred, and now the file is sitting on the drive like this: enter image description here

with the neaty little progress bar.

Which leads me into thinking, there must be a way to keep going from where I left off?

Do i just have to copy-paste the file again and hope osx magically does it for me, or do I have to do any commandline-fu to get this working?


I've just done a couple of quick tests with OS X Mavericks and it seems that the answer to your question depends on where the copy was at when you interrupted it.

If a sub-folder with multiple files was being copied when you stopped it then just that sub folder will not be accurately copied if you just recopy everything as you did the first time.

Everything else will be. Once fully copied you will have to open the folder which was "part way" through and re-copy it.

If you interrupted the copy when a file was being copied (rather than a folder) then there is nothing special you need to do, a re-copy will work fine.

You will need to click through the usual "Don't replace" and "Apply to all" dialog boxes for all the above scenarios:

enter image description here

  • Your answer, while neat, doesn't respond to his question. His question is "Is there a way to get OS X to pick up where it left off" and the answer as far as I know is NO. There are other programs that can resume transfers more cleanly (like Transit), but they aren't usually used for local copying. These are usually used for network transfers. Sorry I have no happy method for you to use... – user388918 Nov 11 '14 at 20:43

I have a similar situation, I was tranfering 660GB of data to another drive, The download got interupted. I don't see how to identify the subfolders which are incomplete. The solution I am using is a Sync folders app. I am using one app called Sync Folders Pro. Cost me 12.00.

It creates an index of the destination folder and compares it to your original files. Using the name and the creation dates of the files it will determine what files it transfers. Not all that different to how back up programs work. This app has the ability to be scheduled and various ways of syncing. The surprising part is that despite having successfully transfered over 200Gb of the 600+ Gb of files. It says it's going to take approximately 19 days to copy over. Unfortuately this app does not show the data transfer speed.

There is a possiblity that the slow speed is that I am copying files from a corrupt Drobo raid. It has 4 drives that make 1oTb of backup. The good news is that it's made to protect the data from a drive failure so I believe I will get all my data.

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