My external hard drive won't show up on my MacBook Pro

So, I'm trying to transfer my music from my PC to my MacBook Pro. I put all my music on an external hard drive, but for some reason when I plug it into my MacBook it won't show up on the desk top. I've already changed my preferences in Finder so that hard drives and disks will show on the desktop, but still nothing. I looked in utilities to see if the hard drive was there, and still nothing. The hard drive is a Toshiba and is fairly new, the light goes on when I plug it into my laptop, so I'm very confused. Can anyone help me with my predicament?

Check that the data cable is securely inserted at both ends.
Try a different cable.
If you're connecting the drive through a hub, connect it directly to a built-in port on the Mac.
If you're connecting it directly, try a different port.
Disconnect all other devices on the bus, or as many as possible.
Test the drive with another Mac. Test another drive with this Mac.
If the drive is bus-powered, but has an AC adapter, connect the adapter.
Boot into Recovery and launch Disk Utility. Is the drive recognized?
If the drive doesn't work under any of the above conditions, and if another drive does work with the same Mac, then the drive has failed. You may be able to salvage the mechanism by removing it from the enclosure and installing it in another one, or in a drive dock.

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Check that the data cable is securely inserted at both ends.
Try a different cable.
If you're connecting the drive through a hub, connect it directly to a built-in port on the Mac.
If you're connecting it directly, try a different port.
Disconnect all other devices on the bus, or as many as possible.
Test the drive with another Mac. Test another drive with this Mac.
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Boot into Recovery and launch Disk Utility. Is the drive recognized?
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2 - PC = MS-DOS (Fat) 30 Go
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Honestly I've no idea, i've done so much with it today.. But if you have any clue on to how i can fix it just comment..

My external hard drive won't show up on my MacBook Pro

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