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Netcmh's solution should work without fail. &nbsp;Most likely they are trying to use the same drive letter.<br />
<br />
-BB
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Netcmh's solution should work without fail.  Most likely they are trying to use the same drive letter.

-BB

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As soon as I assigned drive letters to the drives (did both at the same time) then they mounted without issue. How fun.<br />
<br />
Thank you.
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As soon as I assigned drive letters to the drives (did both at the same time) then they mounted without issue. How fun.

Thank you.

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Do you see both in &quot;safely remove hardware&quot; window or in disk manager?<br />
What are ocupied drives letters?
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Do you see both in "safely remove hardware" window or in disk manager?
What are ocupied drives letters?

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I have two WD Passport 320GB drives and I can see one at a time on my windows 7 64bit machine. If I plug one in then I can see it but the second (doesn't matter which one is first or second) I cannot see in explorer. What am I missing?<br />
<br />
My 120GB Passport is not affected and I can see it whenever I plug it in. 
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I have two WD Passport 320GB drives and I can see one at a time on my windows 7 64bit machine. If I plug one in then I can see it but the second (doesn't matter which one is first or second) I cannot see in explorer. What am I missing?

My 120GB Passport is not affected and I can see it whenever I plug it in. 

Cannot see both of my WD Passport 320 drives on Windows 7 64bit.

Windows 7 is an operating system from Microsoft. Features include multi-touch support, a redesigned Windows Shell with a new taskbar, referred to as the Superbar, a home networking system called HomeGroup, and performance improvements.

Windows 7

Storage devices include any device used for storing and retrieving digital information. Hard disk drives (HDDs) use one or more rigid ("hard") rapidly rotating disks (platters) coated with magnetic material. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored or retrieved in any order and not only sequentially. The primary competing technology for secondary storage is flash memory in the form of solid-state drives (SSDs), but HDDs remain the dominant medium for secondary storage due to advantages in price per bit and per-device recording capacity. CD-RW (Compact Disc-ReWritable) is a digital optical disc storage format that allows information to be stored outside the mechanical HDD.