External Drive No Longer Recognized

I have a DiskGo Edge 500GB external hard drive that will no longer mount on my computer. It was dropped from about two feet, and no longer pops up on my desktop. Originally, when I launched Disk Utility, it would appear on the sidebar, but after about five minutes it failed to show up. I booted into a Leopard Install DVD and ran Disk Utility form there, and it appeared there, but still would not show up when logged in. Running the Data Rescue 3 program was no help, as it didn't even appear as a drive to repair.
The drive still emits a soft hum when connected, and there are no visible signs of wear. Any ideas?

All of a sudden it is now being recognized by Disk Utility again. However, if I click on it, I just get the rainbow wheel.
Terminal displays it through diskutil list, and this is the information when I type diskutil info /dev/disk2:
Device Identifier: disk2
Device Node: /dev/disk2
Part Of Whole: disk2
Device / Media Name: FUJITSU MJA2500BH G2 Media
Volume Name:
Escaped with Unicode:
Mounted: No
File System: None
Partition Type: FDiskpartitionscheme
Bootable: Not bootable
Media Type: Generic
Protocol: USB
SMART Status: Not Supported
Total Size: 500.1 GB (500107862016 Bytes) (exactly 976773168 512-Byte-Blocks)
Volume Free Space: Not Applicable
Read-Only Media: No
Read-Only Volume: Not applicable (no filesystem)
Ejectable: Yes
Whole: Yes
Internal: No
OS 9 Drivers: No

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hello, i dont have a UPS but have it connected to a power strip
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verifying volume "mac mini"
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1%)
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lettertosteve
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Xpetepan wrote:
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Welcome to Apple Discussions!
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External Drive No Longer Recognized

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