Airport Extreme and External Hard Drive Problem

[Soulflower]

I have an old My Book hard drive and decided to plug it in to my Airport Extreme just to test it. I plugged it in and my iMac recognized it right off. I cleaned up the hard drive and deleted some old stuff.

Sometime after that I rebooted the computer and now the iMac is not recognizing it. I moved it from the Air Port Extreme and plugged it directly to the iMac and it still didn't recognize it.

I tried it on my Macbook Pro and it did recognize it.

I'm not connected wirelessly on the iMac but I am on the Macbook pro. Should that matter?

Any ideas?

 

[S.B.G]

I have an old My Book hard drive and decided to plug it in to my Airport Extreme just to test it. I plugged it in and my iMac recognized it right off. I cleaned up the hard drive and deleted some old stuff.

Sometime after that I rebooted the computer and now the iMac is not recognizing it. I moved it from the Air Port Extreme and plugged it directly to the iMac and it still didn't recognize it.

I tried it on my Macbook Pro and it did recognize it.

I'm not connected wirelessly on the iMac but I am on the Macbook pro. Should that matter?

Any ideas?

I assume Finder isn't seeing it right? Have you checked Disk Utility to see if it's showing up there? Maybe something went wrong and it needs formatting again.

 

[Soulflower]

Disk Utility is seeing it but can't repair it. Maybe that's right. Maybe I do need to format it.

What formatting option would be best to choose?

 

[Soulflower]

I reformatted and it seemed to be working fine. A few minutes later, nothing would connect. Any ideas?