Copying changed files only

Hello all,
I've created an Automator task which copies specific folders from one drive to another for backup purposes. Since there are many files this process is running too long. Is there a way to copy only files which have been added or changed since last backup?
Thanks
Klaus

If you're not going to use the drive on a Windows machine, you should use Disk Utility (Applications>Utilities folder) to erase the drive and format it as "Mac OS Extended (Journaled)" with a single GUID partition (default):
Good luck,
Clinton

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I'm an Apple newbie.
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Bruce Michel wrote:
Thanks. Looks like that could be the issue. I did a routine disk check on Dec 9. The logs don't go back that far, but I don't see a good backup. So, I went ten days without a good backup on TM.
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I had to take a picture with my phone because we're not allowed to connect the computers with an usb drive, I hope you can see it clear.
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11166065_887284134650745_1225026485_n.jpg ‏46 KB

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Copying changed files only

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