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External Hard drive not showing up in 'My Computer', and 'Disk Management'

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April 22, 2014 2:56:07 AM

The Seagate Momentus 5400.6 hard drive I'm using is from my old laptop it has 4 disks.
After I put it in the (IT-CEO IT-700) enclosure, and connect it to my new laptop it does not show up in 'My Cumputer' and 'Disk Management', but displays in the 'device and printer' section of control pannel.
I also can't eject the hard drive, even when I'm not doing anything to it, the (IT-CEO IT-700) enclusre's blue signal light just keeps flashing for a while then goes off for a sec, then resume flashing again.
My laptop also keeps trying to install the hard drive.

I tried reinstall the hard drive's driver, but that did not solve the problem.


Please Help !!!

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a c 318 G Storage
a b D Laptop
April 22, 2014 5:50:42 AM
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April 22, 2014 6:05:01 AM

I had this same issue with an external drive i bought from seagate that was designed to be external. The drive would just flash its green light and the computer would say its installing but never would. I plugged it into another computer and that computer recognized it quickly. Try plugging it into another computer and see if the drive is accessible then. If it is, then theres some strange issue with the computer and not the drive.
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a c 359 G Storage
April 22, 2014 1:44:40 PM

I'm pretty sure your problem is power. That HDD is an internal unit originally designed for use inside a laptop. Its specs say it requires its 5VDC power supply to provide 1.0 amps for start-up, and up to 1.3 amps for operations. You have mounted it in en enclosure that uses a USB port connection. The older USB2 port provides 5VDC power up to 0.5 amps; the newer USB3 ports can get almost to 1.0 amps. Your HDD unit can't operate with those limited power sources. You need a different type of enclosure that has its own power supply module and does not draw all its power from a USB port.
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April 22, 2014 8:51:52 PM

Phillip Corcoran said:
Test it with SeaTools for Windows: http://www.seagate.com/as/en/support/downloads/item/sea...


I tried it, but for some reason the SeaTools can't detect the external hard drive, whenever I try to rescan for devices, during the scanning the signal light of the drive would go of and when it went back on, the scan had finished.


@Paperdoc, I think it may have been a problem with power, but most 2.5'' hard drive enclosures don't have a separated power supply. Most 3.5'' ones do, but they are too big for my hard drive. I will try find one that has a separated power supply.


Thanks guys.
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a c 359 G Storage
April 23, 2014 8:28:08 PM

When you go to buy an enclosure, you have to pay special attention to the type of HDD unit it can accept inside. This involves both the electrical connectors and the means of mechanically fixing the unit inside the case. I have seen some enclosures that claim they can accept any SATA unit, either a standard desktop-sized 3½" unit OR a smaller laptop-sized 2½" unit. I agree that very few (maybe none?) of the "portable" enclosures come with or even can accept an external power supply.
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September 7, 2014 3:20:36 PM

It's actually pretty simple. I was having the same problem. You have to format it. Here's what I did:

1.- Open Sea Tools for Windows
2.- Right at the top go to "System Tools" menu, click it, go to "Microsoft System Tools", then "Disk Management". And what you're going to do there is find the Disk number that's not showing up on Windows and you're to click to the right long rectangle of that Disk number (it should get filled up with blue lines across it). Then right click and format. Click "Ok" to do a NTFS Quick format and that's it! :) 
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