Hi my hard drive is full and my question is how İ can send folders to external hard drive to be able to make space?
Yes, check out the following support articles.
iPhoto '11: Move your iPhoto library to a new location
iTunes for Mac: Moving your iTunes Media folder
iMovie '11: Copy or move a project to an external hard disk
However, please note that it is always best to have a good backup in place before moving any or all of your User Libraries.
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