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: Win7 cannot see my WD 3TB external

06 Aug 2012   #1

Windows 7 - 64 bit
Win7 cannot see my WD 3TB external

I've been sorting through forums, and have opt'd out to just asking.

I have: Windows 7 - 64bit, Hp pavilion dv7-4265dx laptop, AMD Phenom II, with the newest Bios available on Hp Support website.
I need: My WD 3TB Cavalier external to be readable on my windows machine. (Just bought it from newegg.)

The drive letter will not show itself under my computer, so I cannot format quickly; which isn't terrible, because I plan to encrypt it with Truecrypt. But both Truecrypt and Easeus are only able to detect 2TB, not the full 3. I have even gone to cmd and ran diskscan, but that will only show 2TB. I understand that it's a whole disk size issue; but I've read that some people see two separate partitions, that equal 3, but I don't even get that. Can someone please give me some advice on what I'm doing wrong? Thank you in advance.

[Update] I converted the new unallocated drive to GPT in disk management. Right click drive > convert to GPT Disk... it increased the drive from 2048GB to 2047.87GB.

My System SpecsSystem Spec
07 Aug 2012   #2

Microsoft Community Contributor Award Recipient


It's possible that your current x64 OS and hardware don't support GPT partitions. You can buy a drive controller that supports the larger GPT drives as long as you're absolutely sure your computer supports those system requirements.

Windows Tip of the Day: Windows 7: 3TB Hard Drives (and Larger)

External Drives Not Recognized/Working in Windows 7 - Microsoft Answers
My System SpecsSystem Spec

 Win7 cannot see my WD 3TB external

Thread Tools

Similar help and support threads
Thread Forum
Installing win7 from external Samsung DVD SE-208
Laptop: Dell Vostro V131 OS: Windows 7 Pro 64-bit External DVD: Samsung SE-208 My external DVD works fine with the Win7 preinstalled in my new laptop. But when I try to re-install the Win7... The laptop recognizes well the external DVD The win7 disc boots fine from the external DVD...
Installation & Setup
Win7 does not recognize External HDD please help!
My computer does not recognize one of my external hdds. I am using two 500gb external hdds that are from the same manufacturer and only one of them shows up. I am able to swap between each one and read the data from them but they can't both be connected so there's nothing wrong with the external...
Hardware & Devices
Win7 and External drives
I have 2 new WD 500gb ext drives that I formatted in Fat32 ( with special downloaded proggy ) so that I can use it through my set top box to watch *.avi movies, as in NTFS they won't play. At first I could copy movies off my h/d on to them , but now win7 won't recognize the files on the ext...
General Discussion
Adding a HDD that already has Win7 on it as an external HDD?
I am getting a new SSD for christmas. I will be installing Windows 7 Ultimate on it doing a fresh/clean install on a new drive. However, once that is done, I want to connect my old HDD (which was Windows 7 Pro) and get the images and stuff off of it, so I can format it and use strictly for...
Installation & Setup
Win7 on External USB disk
Hi. I 've tried to install win7 on an external HD but I've got the attached error message. I have a mobo Q8200 Intel Core 2 Quad, bios settings: USB always enabled, boot sequence : 1-usb/2-dvd/3-hd(with Vista HP 64). I'd like know if it's impossible or I'm in a mistake Thank you very much Best...
Installation & Setup
Win7 not handling external LCD correctly
I have a laptop with an external 22" wide screen LCD monitor. This setup ran fine with XP and Vista, but is not working correctly under Win7 RC1. 1) The monitor is running at 1680x1050 resolution and Win7 knows this (verified by the display settings). 2) However, the monitor is displaying a...
Installation & Setup

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 21:15.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App