External hard drive not detected with the error: "You must format the disk in the J: drive until you can use it."

Hello

I have an external hard drive to work perfectly. I'm back from vacation, and it does not appear under "My Computer". It appears under "Devices and printers", however. This is a link to a screencap of Device Manager: http://i.gyazo.com/9e91e1d71ed32c55dba0419e79b499d5.png

The device in question is that of J:, and it says here that he has 100% free space, that worries me, because he had only 50 GB of free space when I used the latter. After that I open the disk management, I get a pop up message saying: "You must format the disk in the J: drive until you can use it."

How can I get my hard drive appears again?

Thank you

Original title: external hard drive not appearing is not in Windows 7

Hi John,.

Thanks for posting your query in Microsoft Community.

I imagine the inconvenience that you are experiencing and will certainly help you in the right direction to solve the problem.

According to the error message, I suggest trying the suggestions posted by the NakulShridhar responded on 14 October 2011 and by that alexquiteguy replied on 13 January 2011 in the thread following link and check if it helps.

"You must format the disk in drive J: before you can use it"

[Steps apply to Windows 7]

Hope this information is useful. Let us know if you need more help, we will be happy to help you.

Tags: Windows

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