Solved external portable hd wants to 'format' in W7 but ok in XP

December 10, 2013 at 17:53:12
Specs: Windows 7, 6gb
i decided to move most of the 'movies' i got on my laptop (W7, 64bit) to an external portable hd, this was done with no problems, a few weeks later i decided to plug this hd back into my laptop and check which movies i had, the hd opened i could see the movies so i clicked on one to be played but i got a message saying 'file not found' so i decided to plug the hd into a different usb port on the laptop, this time got a message saying (something like) 'device needs formatting' strange i thought..

Anyway i had an idea to plug this portable hd into my XP desktop, the hd opened and i could play all the movies with no problems, this is baffling me, can anybody explain why this happened.....thanks.

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✔ Best Answer
December 13, 2013 at 05:59:04
You can also try a different USB port. Depending on the laptop, you may have one or two USB controllers. You should be able to see that in your Device Manager. If you are using one of your USB ports for a device that draws a lot of current there may not be enough left to run the external drive.


#1
December 11, 2013 at 03:39:45
Did you by any chance install any drive encryption software for your external hard drive on your Windows XP desktop computer?

If yes, you need to install that same software on your Windows 7 laptop (assuming the software is Windows 7 compatible, if not you need a newer version of the software).

I cannot think of any other reason why it works on XP but not on Windows 7.

message edited by phil22


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#2
December 11, 2013 at 04:11:39
Phil22
no not to my knowledge, no drive encryption.....after a few attempts in my W7 laptop i managed to open this hd and went to properties/tools/check drive for errors, after this process it seems to be ok (for now) but i would still like to know why it had a problem with W7 but was ok in XP..its a strange one on most of the attempts i either got a message saying 'you need to check disk/continue without checking' if i did choose 'check disk' it would either hang or say 'cant access disk' sometimes when in 'computer' i could see the drive but no capacity line(the bar under drive letter to tell you how much has been used) when it was like this if i choose 'properties' it would say it was full...its a mystery to me why this happened

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#3
December 11, 2013 at 05:53:53
Is the external a USB powered 2.5" model? If so, the USB controller may not be properly powering the drive on the Windows 7 computer.

Windows 7 also has more robust security with files, although I don't know if that is an issue in this case.

Did you use the Safely Remove Icon to disconnect the external every time?


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#4
December 13, 2013 at 03:41:51
OtheHill
i think you might be right, concerning the power issue, as other people has mentioned this, the hd is drawing power from the usb, so it might not be getting enough, but i do have (from a different portable hd) a cable that has 2, full size, usbs one for data the other for extra power, and it fits this hd as well, so i will use that from now on and hopefully this will cure the problem (fingers crossed)

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#5
December 13, 2013 at 05:59:04
✔ Best Answer
You can also try a different USB port. Depending on the laptop, you may have one or two USB controllers. You should be able to see that in your Device Manager. If you are using one of your USB ports for a device that draws a lot of current there may not be enough left to run the external drive.

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