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: 3TB Hard Drive - 2TB Available

11 Dec 2013   #1

Windows 7 Home Premium 64Bit (Service Pack 1)
3TB Hard Drive - 2TB Available

Hi Guys,

Recently had a problem with my external hard drive. Finally got all my files off it and did a format as that was the only way windows would pick it up.

However since i did the format it is only showing 2TB allocated and 700Gb unallocated and wont let me extend the drive.

Couple of screens attached. hope they help.

Overall View of Disk Management

3TB Hard Drive - 2TB Available-hard-drive-problem.png

Right Click options i get

3TB Hard Drive - 2TB Available-right-click-options.png

My System SpecsSystem Spec
11 Dec 2013   #2

Windows 7 ultimate 64-bit

Do you know how and if the hard drive was originally set up; whether or not there was a partition set up on the drive or is it just a normal setup?
My System SpecsSystem Spec
11 Dec 2013   #3

Windows 7 Home Premium 64Bit (Service Pack 1)

Thanks for the reply Matt,

The hard drive was an external desktop hard drive, but am now using it in a hot swap bay in my case.

So I would say it was just a normal setup? There were no partitions when I bought it

My System SpecsSystem Spec

11 Dec 2013   #4

Windows 7 Pro-x64

You have the drive marked "Active" so Windows placed boot files on it. Legacy boot (standard BIOS) can only boot from a 2T drive or less so Windows made the partition 2T.

I'll let the brainy install guys tell you how to get rid of it. :)
My System SpecsSystem Spec
12 Dec 2013   #5

7 Pro x64, 10 Pro x64

if you currently have no data on it and just want to be able to use it for just storage. the fast way to make it un-active and usable is to use diskpart just select it in disk part then clean that disk (make sure you only clean the disk you want.)
you can see my pics below for an example but basically do this ina elevated command prompt:
list disk
select disk # (# being the disk you want)
list part (to make sure it's the one you want, you can also do detail disk like my pic to see more info if your not sure it's the right one.)
clean (only clean it once your sure it is the right one)

then in disk management it will show unallocated for the whole thing and windows can format it how you want.

EDIT: as carwiz said if that drive was in your system when you installed windows they your BCD is currently on that drive and must be moved with something like EASY BCD, or else your OS will not boot once you erase it. If you pull that drive out of your system with the machine off and then try to boot your OS will it boot? If you look at the picture that is my music drive and it was in my pc when i installed 7 on my ssd and is why it is listed as a system disk on the right side. it had MY BCD on it before i moved it to C:\

Attached Thumbnails
3TB Hard Drive - 2TB Available-disksmine.jpg  
My System SpecsSystem Spec
12 Dec 2013   #6
Comp Cmndo

Windows 7 Home Premium 64bit

My System SpecsSystem Spec

 3TB Hard Drive - 2TB Available

Thread Tools

Similar help and support threads
Thread Forum
hard drive failed, system image not found on hard drive
hi all, i hope someone can help me out, i am a newbie to all this so bare with me. my hard drive failed over a month ago but i managed to do a system image with win7 to my new 2tb internal hard drive. i cannot get the image recovery to work as i says "no image can be found on hard disk". i am at...
Backup and Restore
how to make your internal hard drive into and external hard drive ?
I have an internal hard disk not in use ,and I would like to make it as external disk ! I looked on the net and I found I should have the " encelsure " butt I think I wont find it here in my city . So is there another way ? like usb -esata cable ?
Hardware & Devices
Internal Hard Drive acting like an External Hard Drive
Hi guys, I'm new on any sort of forums so go easy if it's a stupid question..but here goes. Me and my brother built me a new computer from scratch (he did the building - i did the watching). To cut a long story short - I purchased an internal hard drive from Overclockers UK. It's a Samsung...
Hardware & Devices
How do I transfer files from bad sata hard drive to new hard drive
Hi. I have a virus infected sata hard drive with windows 7 on it. It has the win 7 anti virus 2012 on it, and it's a cybercriminal virus. I have lots of files I want to transfer to the new sata drive. I already have windows 7 installed on the new drive. How do I get the files from the bad drive to...
Installation & Setup
Computer Not Booting Hard Drive/Unresponsive Hard Drive
Hey guys, I have a HP Touchsmart IQ500. Turning my computer PC on today, all I got was a blue HP invent screen with setup, boot menu, system recovery, and system diagnosis, and I could not get past it. I entered the BIOS and figured out that the hard drive was listed as "not installed."...
Hardware & Devices

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 23:43.
Twitter Facebook Google+