Finder/Itunes freezes when I plug in external hard drive.

I can't view the files on the harddrive or eject it and get an error -8072 when I try to eject. Time machine back up does not work either it just says preparing for backup for a long time. This started happening two days ago but it was fine before that

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

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    iPod Tutorial
    iTunes Tutorial

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    2012EVOL wrote:
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    Make a shortcut to this folder on your desktop.
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    sydababy wrote:
    and then deleting them off of my computer.
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    follow here:
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    Deleting them off your computer is fine....having only ONE copy is extremely BAD.
    The Tragedy that will be, the tragedy that never should be
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    Message was edited by: hbdivegirl

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