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Solved: New Seagate 3TB hard drive doesn't show up in My Computer


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dst79 dst79 is offline
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01-Dec-2012, 08:33 PM #1
Solved: New Seagate 3TB hard drive doesn't show up in My Computer
I recently purchased a Seagate Backup Plus 3TB hard drive with USB 3.0 connector. I connected the 3.0 cable to a 2.0 port(don't have 3.0 ports) and windows popped up saying installing drivers for new device, pretty standard stuff. After it was done I went to My Computer, but the hard drive does not show up.

I checked device manager, and it does show the drive there. When I clicked properties and tried populating the "volumes" section, a 2.8tb section did show up, but had no label, but i don't know the significance of that. Any help with this is appreciated, thanks in advance.

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02-Dec-2012, 01:11 AM #2
What is the status in Drive Management?

It sounds like the drive simply isn't partitioned or formatted. But most external drives ship formatted.
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02-Dec-2012, 02:41 AM #3
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and it is partitioned. And as I read on the box, it is suppose to have the install files for the Seagate Dashboard already on it, so it had to be formatted and partitioned.
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02-Dec-2012, 04:13 AM #4
in disk management give it a drive letter
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02-Dec-2012, 05:01 AM #5
Try removing all volumes on the drive in Disk Management. Create new one(s).

Drives will only appear in explorer if they can be mounted, and that means that they contain a file system recognized by Windows.

What sizes are the current partitions? If any is over 2 GB, you will need to re-initialize the drive and use GPT partitioning to access it in Windows.
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02-Dec-2012, 03:43 PM #6
This is how it looks in device manager:


Now the its a 2.8tb partion so that might be the problem.

On a side note, because this might be important, I have another 1tb external hard drive that i have been using for over a year, that i have split up into 3 partions. Recently, i can only access the videos partion, the others showing up in device manager, but not on my computer.


I only bring this up because the unlisted partions look the same so that might be the problem, but like i said, this is a very recent problem.
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02-Dec-2012, 05:53 PM #7
Post a screen-shot of Disk Management (Start > Run type DISKMGMT.MSC press Enter).

Increase the size of it's window if necessary to show all the info.
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02-Dec-2012, 06:07 PM #8
Thank you. When I opened DiskMGMT I right clicked the partion and gave it a drive letter, after which I fixed not only my 3tb hd but my 1tb as well. They both instantly showed up in my computer. Just a follow up question, can you think of a reason that they weren't given drive letters automatically?
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