If you can't copy files to usb in Mac and desperately looking for the easy solution of this problem then you have reached at right place. After reading this post you will come to know the all issues that stops you to copy files to usb in your Mac computer and its solutions. There are many devices like smartphone, digital camera, music player etc can be connected via usb to the computer. Many of the peoples are sharing their files from computer to the external device through usb. Sometimes it it is also possible that user can't copy files to usb in mac. There are many issues behind this problem and you need to know about that. If you are copying any file from you Mac computer to an external usb device and at the same moment if computer gets shut down then this stop the file copying process. Problem in usb slot would be the another reason of can't copy files to usb in mac. You have to connect the usb device with the computer properly whenever you can't copy files to usb in mac. Well, if this problem causes loss of any data then it is recommended to use Mac data recoevry software. It is supporting in all versions of Mac computers. This software will recover any lost, deleted or corrupted data.