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Windows 7: Windows 7 not recognizing my external HDD

03 Oct 2009   #1
k31k0

Windows 7 x64
 
 
Windows 7 not recognizing my external HDD

Hi. I have recently purchased the PQI external hard drive. It works on Windows XP, on Ubuntu Linux... But when I connect it to my computer with Windows 7 installed (RTM version), it won't show up in My Computer. When I try to format it in the Disk Management, it shows up some kind of error. I can't remember what it is, but when I get home I'll tell you. Can someone help me? I have searched the Google and this forum but nothing helped so far


My System SpecsSystem Spec
.
03 Oct 2009   #2
Dave76

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
 
 

Quote   Quote: Originally Posted by k31k0 View Post
Hi. I have recently purchased the PQI external hard drive. It works on Windows XP, on Ubuntu Linux... But when I connect it to my computer with Windows 7 installed (RTM version), it won't show up in My Computer. When I try to format it in the Disk Management, it shows up some kind of error. I can't remember what it is, but when I get home I'll tell you. Can someone help me? I have searched the Google and this forum but nothing helped so far
Welcome to Seven Forums.

Are you using USB or eSATA to connect your external HD?

Do you have a single OS on your computer or are you multi-booting?

How long ago did you install Win7?

When you see it in Disk Management is there a yellow triangle and explanation point?

Check in Device Manager if there are any yellow triangles and explanation points or downward pointing arrows in any of the items listed, expand each one to be sure.

If your external has USB and eSATA there might be a switch on the back to select which one to use, if there is then check its position.

What is the PQI external Hd model number and size? The HD size in GB and the disk size, 2 1/2" or 3 1/2"?
My System SpecsSystem Spec
03 Oct 2009   #3
k31k0

Windows 7 x64
 
 

Quote   Quote: Originally Posted by Dave76 View Post
Welcome to Seven Forums.

Are you using USB or eSATA to connect your external HD?
I'm using USB to connect it. It doesn't have eSATA interface.

Quote   Quote: Originally Posted by Dave76 View Post
Do you have a single OS on your computer or are you multi-booting?
It's single OS computer that I'm using primarily as Media Center to watch TV and movies.

Quote   Quote: Originally Posted by Dave76 View Post
How long ago did you install Win7?
I installed it about a month ago but I didn't have external HDD before now.

Quote   Quote: Originally Posted by Dave76 View Post
When you see it in Disk Management is there a yellow triangle and explanation point?
No, there is no yellow triangle nor explanation point.

Quote   Quote: Originally Posted by Dave76 View Post
Check in Device Manager if there are any yellow triangles and explanation points or downward pointing arrows in any of the items listed, expand each one to be sure.
In Device Manager, in the Disk drives group I can see the disk (called "PI-210 USB 2.0 Drive USB Device") but I also see one Unkown device that disappears when I disconnect the HDD.

Quote   Quote: Originally Posted by Dave76 View Post
If your external has USB and eSATA there might be a switch on the back to select which one to use, if there is then check its position.
It has only the USB interface.

Quote   Quote: Originally Posted by Dave76 View Post
What is the PQI external Hd model number and size? The HD size in GB and the disk size, 2 1/2" or 3 1/2"?
Model number is PQI H550 (2,5" disk with 320 GB capacity).


Thanks for trying to help.
My System SpecsSystem Spec
.

03 Oct 2009   #4
Dave76

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
 
 

Quote   Quote: Originally Posted by k31k0 View Post
Hi. I have recently purchased the PQI external hard drive. It works on Windows XP, on Ubuntu Linux... But when I connect it to my computer with Windows 7 installed (RTM version), it won't show up in My Computer. When I try to format it in the Disk Management, it shows up some kind of error. I can't remember what it is, but when I get home I'll tell you. Can someone help me? I have searched the Google and this forum but nothing helped so far
What was the error message?

Quote   Quote: Originally Posted by k31k0 View Post
In Device Manager, in the Disk drives group I can see the disk (called "PI-210 USB 2.0 Drive USB Device") but I also see one Unkown device that disappears when I disconnect the HDD.
That's when you disconnect the external HDD, right?

Is the external HD partitioned?

Can you give a screen shot of Disk Management with the external HD plugged in?

If there is no drive letter assigned in Disk Management, right click the 'Unknown drive' and click, Change Drive Letter and Path, then assign a drive letter.

Let me know if this is the problem.

Quote   Quote: Originally Posted by Dave76 View Post
What is the PQI external Hd model number and size? The HD size in GB and the disk size, 2 1/2" or 3 1/2"?
Model number is PQI H550 (2,5" disk with 320 GB capacity).


Thanks for trying to help.[/QUOTE]


I would guess there is no external power supply, is that correct? Gets it's power from the USB port.

Let us know if this helps, or you get it working some other way.
Seems to be a re-occurring issue.
My System SpecsSystem Spec
03 Oct 2009   #5
k31k0

Windows 7 x64
 
 

Quote   Quote: Originally Posted by Dave76 View Post
What was the error message?
The error is typical Microsoft unexpected error (I could never understand why would error ever supposed to be expected???) - it says:
Code:
An unexpected error has occurred. Check the System Event Log for more information on the error. Close the Disk Management console, then restart Disk Management or restart the computer
Quote   Quote: Originally Posted by Dave76 View Post
Quote   Quote: Originally Posted by k31k0 View Post
In Device Manager, in the Disk drives group I can see the disk (called "PI-210 USB 2.0 Drive USB Device") but I also see one Unkown device that disappears when I disconnect the HDD.
That's when you disconnect the external HDD, right?
Yes, that happen when I disconnect the external HDD.

Quote   Quote: Originally Posted by Dave76 View Post
Is the external HD partitioned?
It's not partitioned.

Quote   Quote: Originally Posted by Dave76 View Post
Can you give a screen shot of Disk Management with the external HD plugged in?
http://img267.imagevenue.com/img.php..._122_107lo.jpg

The external HDD is the one called "Disk 1".

Quote   Quote: Originally Posted by Dave76 View Post
If there is no drive letter assigned in Disk Management, right click the 'Unknown drive' and click, Change Drive Letter and Path, then assign a drive letter.

Let me know if this is the problem.
When I click on "Change Drive Letter and Path", I get the following message:
Code:
The operation failed to complete because the Disk Management console view is not up-to-date. Refresh the view by using the refresh task. If the problem persists close the Disk Management console, then restart Disk Management or restart the computer.
Of course, I did all of that and the problem and the message are still the same.

Quote   Quote: Originally Posted by Dave76 View Post
I would guess there is no external power supply, is that correct? Gets it's power from the USB port.

Let us know if this helps, or you get it working some other way.
Seems to be a re-occurring issue.
No, the HDD has two USB connectors that has to be connected to the computer.
My System SpecsSystem Spec
03 Oct 2009   #6
DocBrown

Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
 
 

I am thinking this external HD has to be initialized first usually by right clicking in disk management. After that is completed you can usually format the HD.
My System SpecsSystem Spec
03 Oct 2009   #7
k31k0

Windows 7 x64
 
 

Quote   Quote: Originally Posted by DocBrown View Post
I am thinking this external HD has to be initialized first usually by right clicking in disk management. After that is completed you can usually format the HD.
But how come it works on every other Windows (XP and Vista) and on Linux? And how can I initialise it when I get that error every time I try to do something in Disk Management?
My System SpecsSystem Spec
04 Oct 2009   #8
Baldwin Cyrus

xp
 
 

Hello guys!

I recently installed the Windows 7 beta on my home computer and love everything about it. The operating system as a whole is great, and I have no complaints… especially when compared to Windows Vista. Anyways, I recently tried to backup my photo folder on my computer to my external hard drive, and I realized that it was not listed in my list of available drives. So I went to my device manager and it wasn’t found there either. I then tried disconnecting and reconnecting it with no luck. When I open up the USB tree in the device manager, I find an “Unsupported USB Device”, which I am assuming is my external hard drive.


Refill Ink

My System SpecsSystem Spec
01 Nov 2009   #9
k31k0

Windows 7 x64
 
 

Did anyone solve this problem? I recently installed new ATi driver for my chipset (for Windows 7) but the problem still exists. Please help me. The OS is great and if I could solve this problem it would be great.
My System SpecsSystem Spec
01 Nov 2009   #10
whest

XP, Vista, W7 64bit Home Premium
 
 

Go into disk management, and on the left where it says the disk number right click, and see whether online is not greyed out, and click online if its available.
My System SpecsSystem Spec
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 Windows 7 not recognizing my external HDD




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