Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Two External Hard Drives, Only One Shows

06 May 2011   #1
bmacleod

Windows 7 Home Premium x64
 
 
Two External Hard Drives, Only One Shows

I have two 2TB Western Digital Elements hard drives (I just got the second one today), and I can't see both of them at the same time on my computer. Each one shows up and works fine individually, but if I put the other one in while one is already in there, the second one won't show up. I changed the letter of one of them, hoping that would work, but to no avail...


My System SpecsSystem Spec
.

06 May 2011   #2
dsperber

Windows 7 Pro x64 (1), Win7 Pro X64 (2)
 
 

Here's a thought...

If you have two identical drives, perhaps Western Digital pre-formatted them identically at the factory. If they both have the same "volume label", then maybe that's what's confusing Windows when you connect the second one.

I recommend that you change the label on one or both external drives, to be unique. Maybe call one "BigDrive1" and the other "BigDrive2" or whatever you want.

First connect one drive and let Windows assign a drive letter to it. Then open Windows Explorer or My Computer, right-click on the external drive, select Properties, and fill in the volume label for that drive.

For example:



Then "safely remove" the drive, disconnect it, and connect the second one. Then change its volume label the same way... but with a unique second label.

Now reconnect the first drive to a second USB port, and see if the drive is now accepted by Windows and assigned a second unique drive letter.


Note: if you have Partition Wizard installed, you can use it as well to plant a volume label.

Select the partition, right-click, and select "label" from the popup menu. Or, you can select the partition and select "set label" from the list of available operations on the left side.




Anyway, my hunch is that it's a duplicate volume label issue, since these are identical drives from Western Digital.

My own personal habit is to assign volume labels to my partitions implying the hard drive manufacturer, the drive size, and then the partition number (P1, P2, etc.). For example:




(just noticed I forgot to label my C partition the last time I installed Win7. It really should be WDC150-P1, which I will do as soon as I post this response.)
My System SpecsSystem Spec
06 May 2011   #3
wally1324

Windows 7 Professional x64 Sp1
 
 

You may also be overloading the USB's power on your comp. causing 1 to not work
My System SpecsSystem Spec
.


08 May 2011   #4
bmacleod

Windows 7 Home Premium x64
 
 

Quote   Quote: Originally Posted by dsperber View Post
Here's a thought...

If you have two identical drives, perhaps Western Digital pre-formatted them identically at the factory. If they both have the same "volume label", then maybe that's what's confusing Windows when you connect the second one.

I recommend that you change the label on one or both external drives, to be unique. Maybe call one "BigDrive1" and the other "BigDrive2" or whatever you want.

First connect one drive and let Windows assign a drive letter to it. Then open Windows Explorer or My Computer, right-click on the external drive, select Properties, and fill in the volume label for that drive.

For example:



Then "safely remove" the drive, disconnect it, and connect the second one. Then change its volume label the same way... but with a unique second label.

Now reconnect the first drive to a second USB port, and see if the drive is now accepted by Windows and assigned a second unique drive letter.


Note: if you have Partition Wizard installed, you can use it as well to plant a volume label.

Select the partition, right-click, and select "label" from the popup menu. Or, you can select the partition and select "set label" from the list of available operations on the left side.




Anyway, my hunch is that it's a duplicate volume label issue, since these are identical drives from Western Digital.

My own personal habit is to assign volume labels to my partitions implying the hard drive manufacturer, the drive size, and then the partition number (P1, P2, etc.). For example:




(just noticed I forgot to label my C partition the last time I installed Win7. It really should be WDC150-P1, which I will do as soon as I post this response.)
I tried this (it's just the same as renaming them, right?), and that didn't work either. So now they have distinct names and distinct drive letters, but still nothing.

I'm pretty sure it's not a USB overload either, since I have another external HD (also Western Digital, but a different kind and size) that works fine when plugged in with one of these two.

Thanks for the help anyway, though!
My System SpecsSystem Spec
08 May 2011   #5
bmacleod

Windows 7 Home Premium x64
 
 

Solution found here, thanks to Win7Survivor.
My System SpecsSystem Spec
Reply

 Two External Hard Drives, Only One Shows




Thread Tools





Similar help and support threads
Thread Forum
All Flash Drives & External Hard Drives NOT ACCESSIBLE?
I set up a new computer. Windows 7 Pro 64x Everything was fine but then I connected a flash drive to it and I get: Location Not Available H:\ is not accessible. Access is denied If I go into the properties to the “security” tab, it says “you do not have permission to view or edit this...
Hardware & Devices
Flash drives and external hard drives
I have windows 7 pro and recently I have not been able to open up a new folder on any external hard drive or flash drive that I use with my computer. When I use these same flash and external hard drives in another computer it works fine, my initial thought is, there is something disabled in my...
Hardware & Devices
Copying data to External hard drive shows error
I have external USB hard drive 'Seagate 500 Gb' When I transfer data (say Video file) from my Laptop to External Hard drive, it starts coping but it stucks and cannot finish coping. Check out the attachment for the detail of the error while coping. Thanx.
Hardware & Devices
HELP! External hard drive shows used space but empty folders!
Hi, I have a 500gb seagate external hard drive, and already used 240gb space. It worked fine until yesterday suddenly i could not access the files at all. I checked disk management, and it showed that my external drive became RAW drive. I tried to do chkdsk that i learned from one of the...
Hardware & Devices
External hard drive shows up in devices but not in my computer
hi computerfriends, I got a problem, my external hard drive (westen digital 1.0TB) isn't popping up my computer. I can see it in devices (USB to ATA/ATAPI bridge) but i can't acces it. What i've done already: Computer Management-> Disk Management. Than ive to initialize the disk, i can choose...
Hardware & Devices
Two hard drives only one shows up?
I just installed windows 7 ultimate on my main hard drive works great so far havent had any problems so far apart from i cant see my 2nd hard drive which had all my pictures and other files i had on windows vista so i thought if i stored them all on the 2nd hard drive i would be able to keep them...
General Discussion

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 23:39.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App