External Hard Drive does not mount after connecting to airport

Hello,
I tried finding a solution to this problem already, but people that posted were having issues seeing the drive connected to the airport, while I am having the opposite problem.
After I tried connecting my USB drive my new airport extreme and it worked there and I tested speed and whatnot, I disconnected it and plugged it back into my iMac and now it will not show up anywhere, and will only show up when connected to the airport.
Basically I want my drive that was connected to the airport to connect to my mac again because it is not working.

Zerimar wrote:
After I tried connecting my USB drive my new airport extreme and it worked there and I tested speed and whatnot, I disconnected it and plugged it back into my iMac and now it will not show up anywhere, and will only show up when connected to the airport.
To clarify, when you connect that drive directly to your iMac it doesn't appear on the Desktop? Do you have Finder preferences set (in the General tab) to show "External disks"? Do you see the drive in Disk Utility?

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I am using a brand new Seagate 2 TB external hard drive for my backup drive. More often than not, when the computer goes to sleep, the icon for the drive is gone from the desktop when the computer wakes up. I have to unplug it from the computer and reconnect it, then it mounts and works fine. I have it plugged directly into the computer's USB port. The drive uses USB3. As far as I can tell, it does not exceed the power requirements of the USB port. It is the only external hard drive I am using at the moment.
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r_dizzle wrote:
Another point of note is that both the HD and the keyboard are connected to the iMac through a 7 port USB hub.
I think this might be the issue. If the iMac is waking back up, it will likely be waking up this HUB, but the HUB might not be re-initialising the connection between OS X and the external drive or the keyboard.
After waking the iMac, if you unplug the external drive from the HUB, then plug it back in again, does OS X pick it up again? Have you tried plugging the external drive directly into the iMac and then testing what the result is?
If you read back on what you've said, you pointed out that you have a USB mouse that you use to wake the iMac from sleep. Is this mouse directly connected to the iMac? If so, it surely can't be a coincidence that a directly connected USB device can wake the iMac from sleep, but any USB devices connected to the iMac via a USB HUB cannot.
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You can try doing a SMC reset, if it doesn't work the first time it's totally OK to reset the SMC several times.
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Press and hold the power button for 5 seconds.
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Attach the computers power cable.
Press the power button to turn on the computer.
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Hi everyone
I am trying to use my Energy Saver to SLEEP my iMac after 1 hour. It goes to sleep no problem, but on wake-up, my external USB hard drive does not reconnect. There is also an error message that I didn't disconnect the drive properly. I fear this may be one of Mac OS X's "features". Has anyone encountered the same thing?
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r_dizzle wrote:
Another point of note is that both the HD and the keyboard are connected to the iMac through a 7 port USB hub.
I think this might be the issue. If the iMac is waking back up, it will likely be waking up this HUB, but the HUB might not be re-initialising the connection between OS X and the external drive or the keyboard.
After waking the iMac, if you unplug the external drive from the HUB, then plug it back in again, does OS X pick it up again? Have you tried plugging the external drive directly into the iMac and then testing what the result is?
If you read back on what you've said, you pointed out that you have a USB mouse that you use to wake the iMac from sleep. Is this mouse directly connected to the iMac? If so, it surely can't be a coincidence that a directly connected USB device can wake the iMac from sleep, but any USB devices connected to the iMac via a USB HUB cannot.
I would suggest you test the drive as it is directly connected to the iMac. I would complete the same test with the keyboard too. I think you'll find it's the USB HUB.
I hope this helps.

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Walter Goodman wrote:
Time Machine says my external hard drive does not have enough space for the current backup. It needs 34 G out of a 250G hard drive. All that is on the drive is earlier backups.
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zone-5 wrote:
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Hello cuckoo55,
Thanks for using Apple Support Communities.
For more information on this, take a look at:
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http://support.apple.com/kb/HT3746
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I have crazy solution to format it to FAT 32, it work a couple times on my several MAxtor, and Western Digital HD. But this is the last resort and if you are not handy and familiar, don't do it.
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Insert a bootable installer disk before XP ('98, ME, or 2000), and start from there until a promt comes, and type fdisk and you delete the old partition and create a new partition and restart once using the disk still and format it using FAT 32.
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External Hard Drive does not mount after connecting to airport

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