WD Elements Play cannot be modified

I've just bought a WD Elements Play which I guess is really an external hard drive. The idea is that I can save AVIs etc on it and then play them through my television.
I've attached the system to my Mac and its icon appears on the screen. I can read the documentation on the system but I can't save anything to it. It should just be a case of drag and drop but I just get a message saying that the Play cannot be modified.
Can anyone suggest anything to make this work?

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It's possible that this WD Elements Play is formatted

as NTFS, which OS X cannot write to.
It would be unusual for the drive to be shipped like that but possible.
Once the drive is mounted, appears on the desktop, launch Disk Utility from the Applications/Utilities folder.
Select the drive in the LH pane and choose Partition.
Choose one partition, give the drive a name, choose Mac OS X Extended (journaled) as the format
Under Options, check that GUID table is selected.
Hit the Apply button and watch Disk Utility do its thing.

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I really appreciate this. I will try it.

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(NT) Let us know how you get on
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Thank-you - it worked!

Sorry it took me so long to respond but I wanted to try things in the morning.
I was directed to this site by another response:,339
and this helped brilliantly. I followed the directions given and it works.
Please note that I am a regular computer/internet user but I would not consider myself experienced.
Thank-you to everyone who replied because you really did help. Laugh

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