I can't open my external hard drive -----HDDR640E03X

Not recommended to open the case of an external hard drive. If you damage some small connector you might loose the right to replace it.

Do you want to initialize the hard drive on your Mac? Or an External Hard Drive?

Assuming External Hard Drive:

1. Go To Applications.
2. Open Utilities Folder.
3. Open Disk Utility (You Should Already Have External Drive Attached To Computer).
4. On left panel select the top name of the external hard drive.
5. On the upper tabs on the right side of the panel select Erase.
6. ***Note this will delete any content on the external hard drive
7. Under Format - Choose Mac OS Extended (Journaled)
8. In Box Below Name The External Hard Drive whatever name you want it to be.
9. On bottom right select erase.

The External Drive will be Mac Compatible.

Let me know if you were trying to accomplish something else.

Check video on this link http://www.youtube.com/watch?v=WJZJ8z1_yaM

please go to my computer, right click -> 'manage' -> disk management

do you see the external HDD listed there?

you obviously want to scrap it for magnet or aluminum, so bashit with hammer and split with chisel, etc.

If your talking about the cable, replace the cable. If your talking about on the external hard drive, either replace the drive if it's under warranty or go buy a new external hard drive enclosure, open the samsung HDD, put the drive in the new enclosure. Opening the enclosure will typically void the warranty.

Plug the external hard drive into your laptop or desktop computer.

Most external hard drives do this through a cable connecting the hard drive to the USB outlet on a computer.

Plug your external hard drive into a wall outlet if it receives power from an AC adapter rather than your computer.

Click on the "My Computer" icon on your desktop, and open the external hard drive.

It will be located under the USB connecting drive, which is labeled with a letter ranging from "E:" to "K:".

Open the folder on your external hard drive where you would like to save the photographs.

usually in my documents my pictures or if you want to save them to a specific spot so as not get them mixed up.

Create a folder if one is not present right click in my documents select new folder and name it lets say my pics 1

Move this window to the bottom right corner of your screen to be used in future steps.

Open the folder on your home computer where the files are being stored that you wish to transfer to the external hard drive.

These may be on the desktop, in "My Documents" or elsewhere in your computer.

If you are unsure where they are located, you can always search for them by file name by going to "Start" then "Search."

Right-click on the photo file, and select "Cut."

Click on the window showing your hard drive files to bring it into use on the screen.

Right-click on the white space in the window where you would like to transfer the files, and select "Paste."

Your files have now been deleted from their original location and transferred to your external hard drive in the folder you selected

hope this helps

There is no way to transfer content from one external to another without using a computer. There should also be no problems plugging in two external hard drives into one computer as long as there is enough USB 2.0 slots available.
Simply plug in both external drives into a computer, open one drive, highlight the files you want, press ctrl+c or right click and select copy and then open the second external drive and press ctrl+p or right click and press paste.

once the external hard drive is plugged in to the computer check under my computer is detected if it does

open the folder where or you can right click the folder or file you want to transfer then select the name of your external hard drive.

you can also use the software that came with your external hard drive but its much easier to drag and drop the files.

hope this help

Either the power-supply for the external drive is dying,
or the disk-drive inside the external case is dying.

Quick, make a "backup" of all the files on your ACOMDATA, before it totally "dies".

If it still is under warranty, exercise the warranty, and replace it.