Win 7 showing 746gb for 3tb drive?

Grownman · Dec 21, 2012, 12:08 AM

I recently purchased a WD 3TB green internal hardrive for backups. Upon booting into windows, the drive only shows 746gb's.

I've already gone into device manager and updated the Nforce Serial ATA and the bios shows 3000. (I assume that is for the 3tb's?)

I am not trying to install windows on the drive, but just use it as another drive for backup needs.
I have tried to go to disk management and format the drive but it will not allow me.

Any suggestions would be greatly appreciated!

_______________________________________
EVGA 780i SLI
Q9550
Primary - WD 1TB Black
Backup - WD 2TB Black
Backup - External WD 2TB elements
*Backup - WD 3TB Green

drdeathx · Dec 21, 2012, 12:08 AM

Extend the partition?

Grownman · Dec 21, 2012, 12:16 AM

Quote:

Originally Posted by drdeathx

Extend the partition?

I've tried to extend the volume, but it does not allow it.

Kreij · Dec 21, 2012, 01:14 AM

Don't you need a UEFI BIOS and a GPT partition to use a 3TB partition?

MadMan007 · Dec 21, 2012, 01:20 AM

You need UEFI to boot off a 2TB+ disk (I think it's technically 2.2TB)

To use 2TB+ disk for storage, it needs to be partitioned as GPT, not MBR. Just select GPT when partitioning in disk management.

Grownman · Dec 21, 2012, 05:54 AM

Quote:

Originally Posted by MadMan007

You need UEFI to boot off a 2TB+ disk (I think it's technically 2.2TB)

To use 2TB+ disk for storage, it needs to be partitioned as GPT, not MBR. Just select GPT when partitioning in disk management.

Thanks for the clarification. How do I partition it to GPT? I don't even see MBR...

sneekypeet · Dec 21, 2012, 06:04 AM

disk management has the option when you format it.

Grownman · Dec 21, 2012, 06:09 AM

Edit: See next post.

Upon right click on the drive -> Format

The only options I am given:

volume label: "New Volume"
file system: NTFS
allocation size: Default
[ ]perform a quick format
[ ]enable file and folder compression

I can't seem to locate GPT.

Grownman · Dec 21, 2012, 06:11 AM

After deleting the volume, I was able to select GPT; however, it still shows the maximum volume as 764307Mb

95Viper · Dec 21, 2012, 06:32 AM

Windows and GPT FAQ

Quote:

Q. What about mixing and matching GPT and MBR disks on the same system?

A.
GPT and MBR disks can be mixed on systems that support GPT, as described earlier. However, you must be aware of the following restrictions:
Systems that support UEFI require that boot partition must reside on a GPT disk. Other hard disks can be either MBR or GPT.
Both MBR and GPT disks can be present in a single dynamic disk group. Volume sets can span both MBR and GPT disks.

Manipulating GPT Disks and Their Contents

Quote:

Q. How do I create a GPT disk?

A. You can create a GPT disk only on an empty, unpartitioned disk (raw disk or empty MBR disk).
For more information about creating GPT disks, see Using GPT Drives.

You need to remove the partition you have created first.

Grownman · Dec 21, 2012, 06:47 AM

Quote:

Originally Posted by 95Viper

You need to remove the partition you have created first.

Thanks Viper, I came across that link earlier as well. After covering to GPT, it still only shows a maximum volume of 746gb.

95Viper · Dec 21, 2012, 06:59 AM

Did you check to see if you got the option to convert to GPT while it is unallocated?
And, then partition...

Grownman · Dec 21, 2012, 07:02 AM

Attached SS.

Behind shows 746.39 GB Unallocated

I've already rebooted to see if that would do anything, but no luck.

95Viper · Dec 21, 2012, 07:16 AM

Quote:

Originally Posted by 95Viper

Quote:

Q. What about mixing and matching GPT and MBR disks on the same system?

A.
GPT and MBR disks can be mixed on systems that support GPT, as described earlier. However, you must be aware of the following restrictions:
Systems that support UEFI require that boot partition must reside on a GPT disk. Other hard disks can be either MBR or GPT.
Both MBR and GPT disks can be present in a single dynamic disk group. Volume sets can span both MBR and GPT disks.

You may need to move the boot partition to that drive for it's capacity to be recognized properly. Your boot partition is on C: which is an MBR disk.

You can use EasyBCD to do this. -->EasyBCD download (Just click "download" you don't need to enter any info)
Changing the Boot Partition <-- Info on the EasyBCD WIKI

Grownman · Dec 21, 2012, 07:42 AM

Hmm, but I am not trying to use it as a boot drive, simply just extra storage. These drives come with a controller/driver to help older mobos recognize the entire drive...

May as well return it and get a 2 TB drive instead... such a fucking nightmare!
Additionally, having an old mobo doesn't help either.

Jetster · Dec 21, 2012, 08:57 AM

Large drive are a pain. You just need to delete the partition and start over. Has nothing to do with your mb. Use a boot disk like Hirens or active kill

Grownman · Dec 21, 2012, 03:42 PM

Quote:

Originally Posted by Jetster

Large drive are a pain. You just need to delete the partition and start over. Has nothing to do with your mb. Use a boot disk like Hirens or active kill

Installed the free version. 746GB of unallocated space.

Jetster · Dec 21, 2012, 07:25 PM

Ok I was wrong Active Kill will not delete or create the partitions. Get Hiren's. Delete and creat one GPT partition

johnboy · Mar 24, 2013, 11:22 AM

Has anyone found a solution to this? I have exactly the same issue.

I have installed a Western Digital 3TB HD. When I go into the BIOS the drive is listed as having 3TB of space, but according to Windows 7 disk management the drive space is 746.39 GB.

The drive is unallocated but I have the GPT partition style selected. If I attempt to create new partition the maximum size is 746GB.

I have also tried a couple of third-party partitioning tools and get the same result unfortunately.

micropage7 · Mar 24, 2013, 12:06 PM

what about making partition through windows installer
its kinda confusing

Mussels · Mar 24, 2013, 01:19 PM

are you guys on the latest service packs for your OS? can you try another machine?

johnboy · Mar 24, 2013, 02:14 PM

Ok, so I finally got it to work, although I must admit I'm still not entirely sure what the issue was. I did the following:

1). Download and burn Gparted to a CD.
2). Go to Disk Management (right click computer->Manage).
3). Right click the box to the left of the volume and set partition style to GPT.
4). Right click on the volume->create new simple volume.
5). Create a new volume with the maximum size (~740GB).
6). Format the disk volume as NTFS (I set allocation unit size to 4kb, but am not sure whether this was necessary).
7). Put in the Gparted CD and reboot windows.
8). Follow the command line instructions to boot Gparted.
9). Load up the disk tool then select your volume from the dropdown menu in the top-right.
10). I saw the full disk space (3TB) split into a 740GB region allocated and the remainder unallocated.
11). Right click on the allocated region and click Grow / Shrink.
12). Drag the bar at the top so your volume covers the whole 3TB.
13). Click apply.
14). Reboot from Gparted, remove the disk and boot into Windows.
15). The disk was then 3TB in size in Windows.

FordGT90Concept · Mar 24, 2013, 03:17 PM

How is the drive connected to the computer? I've had problems with computers not being able to consistently see all 3TB of a drive when connected via USB.

Also, it's possible the drive is no good. I would run Data LifeGuard Diagnostics and see what it concludes.

newtekie1 · Mar 24, 2013, 03:30 PM

Yeah, something is not right here. Even if it is formatted as MBR, Disk Management should still see all the space, it will just list the extra space that can't be used due to to MBR as unallocated.

Edit: After some quick googling it seems to be an Intel RST driver issue.
See here: http://www.servethehome.com/fix-746g...d-drive-issue/

Updating Intel RST seems to fix the issue.

johnboy · Mar 24, 2013, 03:47 PM

I have an AMD processor, so in my case this wasn't the issue.

The drive was connected by SATA.

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BIOS Version/Date: Phoenix Technologies, LTD 5.17, 09/10/2008
SMBIOS Version: 2.4

Dec 21, 2012, 12:08 AM	#1
Grownman Join Date: Dec 2008 Location: CA Posts: 139 (0.08/day) Thanks: 15 Thanked 4 Times in 4 Posts System Specs	Win 7 showing 746gb for 3tb drive? I recently purchased a WD 3TB green internal hardrive for backups. Upon booting into windows, the drive only shows 746gb's. I've already gone into device manager and updated the Nforce Serial ATA and the bios shows 3000. (I assume that is for the 3tb's?) I am not trying to install windows on the drive, but just use it as another drive for backup needs. I have tried to go to disk management and format the drive but it will not allow me. Any suggestions would be greatly appreciated! _______________________________________ EVGA 780i SLI Q9550 Primary - WD 1TB Black Backup - WD 2TB Black Backup - External WD 2TB elements *Backup - WD 3TB Green

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Dec 21, 2012, 01:14 AM	#4
Kreij Hardcore Monkey Moderator Join Date: Feb 2007 Location: Cheeseland (Wisconsin, USA) Posts: 12,254 (5.27/day) Thanks: 591 Thanked 5,510 Times in 2,948 Posts System Specs	Don't you need a UEFI BIOS and a GPT partition to use a 3TB partition? __________________ Cloud (noun, singular): A dynamic arrangement of multiple potential single points of failure, with a user at one end and their data at the other. Get more tech news on a wide variety of topics at NextPowerUp

Dec 21, 2012, 12:08 AM	#2
drdeathx Join Date: May 2009 Location: Chicago burbs Posts: 1,751 (1.17/day) Thanks: 45 Thanked 400 Times in 325 Posts System Specs	Extend the partition?

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Dec 21, 2012, 01:20 AM	#5
MadMan007 Join Date: Jun 2009 Posts: 109 (0.07/day) Thanks: 5 Thanked 10 Times in 7 Posts	You need UEFI to boot off a 2TB+ disk (I think it's technically 2.2TB) To use 2TB+ disk for storage, it needs to be partitioned as GPT, not MBR. Just select GPT when partitioning in disk management.

Dec 21, 2012, 06:04 AM	#7
sneekypeet Unpaid Babysitter Join Date: Apr 2006 Posts: 19,115 (7.28/day) Thanks: 3,062 Thanked 5,500 Times in 3,959 Posts System Specs	disk management has the option when you format it. __________________ Hers: ASUS Maximus V Gene / i7 3770K / Swiftech H220 / 4X8GB Corsair Dominators / ASUS GTX660 / Corsair AX-760 / Windows 7 64bit / Fractal Design ARC Midi R2 Test: Gigabyte Z68X-UD4-B3 / i7 2600K / A lot Of Coolers / Ripjaws Currently / HIS HD7950 IceQ Turbo / Silverstone SST-ST85F-G / Windows 7 64bit / InWin D-Frame Limited Edition

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Dec 21, 2012, 06:09 AM	#8
Grownman Join Date: Dec 2008 Location: CA Posts: 139 (0.08/day) Thanks: 15 Thanked 4 Times in 4 Posts System Specs	Edit: See next post. Upon right click on the drive -> Format The only options I am given: volume label: "New Volume" file system: NTFS allocation size: Default [ ]perform a quick format [ ]enable file and folder compression I can't seem to locate GPT.

Dec 21, 2012, 06:11 AM	#9
Grownman Join Date: Dec 2008 Location: CA Posts: 139 (0.08/day) Thanks: 15 Thanked 4 Times in 4 Posts System Specs	After deleting the volume, I was able to select GPT; however, it still shows the maximum volume as 764307Mb Attached Thumbnails Last edited by Grownman; Dec 21, 2012 at 06:30 AM.

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Dec 21, 2012, 06:59 AM	#12
95Viper Join Date: Oct 2008 Location: στο άλφα έως ωμέγα Posts: 3,855 (2.25/day) Thanks: 2,040 Thanked 1,424 Times in 1,123 Posts System Specs	Did you check to see if you got the option to convert to GPT while it is unallocated? And, then partition... __________________ Heatware: 95viper TECHPOWERUP GEAR!

Dec 21, 2012, 07:02 AM	#13
Grownman Join Date: Dec 2008 Location: CA Posts: 139 (0.08/day) Thanks: 15 Thanked 4 Times in 4 Posts System Specs	Attached SS. Behind shows 746.39 GB Unallocated I've already rebooted to see if that would do anything, but no luck. Attached Thumbnails

Dec 21, 2012, 07:42 AM	#15
Grownman Join Date: Dec 2008 Location: CA Posts: 139 (0.08/day) Thanks: 15 Thanked 4 Times in 4 Posts System Specs	Hmm, but I am not trying to use it as a boot drive, simply just extra storage. These drives come with a controller/driver to help older mobos recognize the entire drive... May as well return it and get a 2 TB drive instead... such a fucking nightmare! Additionally, having an old mobo doesn't help either.

Dec 21, 2012, 08:57 AM	#16
Jetster Join Date: Jan 2010 Location: Oregon Posts: 2,945 (2.36/day) Thanks: 979 Thanked 892 Times in 650 Posts System Specs	Large drive are a pain. You just need to delete the partition and start over. Has nothing to do with your mb. Use a boot disk like Hirens or active kill

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Dec 21, 2012, 07:25 PM	#18
Jetster Join Date: Jan 2010 Location: Oregon Posts: 2,945 (2.36/day) Thanks: 979 Thanked 892 Times in 650 Posts System Specs	Ok I was wrong Active Kill will not delete or create the partitions. Get Hiren's. Delete and creat one GPT partition

Mar 24, 2013, 11:22 AM	#19
johnboy Join Date: Mar 2013 Posts: 3 (0.03/day) Thanks: 0 Thanked 1 Time in 1 Post	Has anyone found a solution to this? I have exactly the same issue. I have installed a Western Digital 3TB HD. When I go into the BIOS the drive is listed as having 3TB of space, but according to Windows 7 disk management the drive space is 746.39 GB. The drive is unallocated but I have the GPT partition style selected. If I attempt to create new partition the maximum size is 746GB. I have also tried a couple of third-party partitioning tools and get the same result unfortunately.

Mar 24, 2013, 12:06 PM	#20
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Mar 24, 2013, 01:19 PM	#21
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Mar 24, 2013, 02:14 PM	#22
johnboy Join Date: Mar 2013 Posts: 3 (0.03/day) Thanks: 0 Thanked 1 Time in 1 Post	Ok, so I finally got it to work, although I must admit I'm still not entirely sure what the issue was. I did the following: 1). Download and burn Gparted to a CD. 2). Go to Disk Management (right click computer->Manage). 3). Right click the box to the left of the volume and set partition style to GPT. 4). Right click on the volume->create new simple volume. 5). Create a new volume with the maximum size (~740GB). 6). Format the disk volume as NTFS (I set allocation unit size to 4kb, but am not sure whether this was necessary). 7). Put in the Gparted CD and reboot windows. 8). Follow the command line instructions to boot Gparted. 9). Load up the disk tool then select your volume from the dropdown menu in the top-right. 10). I saw the full disk space (3TB) split into a 740GB region allocated and the remainder unallocated. 11). Right click on the allocated region and click Grow / Shrink. 12). Drag the bar at the top so your volume covers the whole 3TB. 13). Click apply. 14). Reboot from Gparted, remove the disk and boot into Windows. 15). The disk was then 3TB in size in Windows.

Mar 24, 2013, 03:17 PM	#23
FordGT90Concept "I go fast!1!11!1!" Join Date: Oct 2008 Location: IA, USA Posts: 10,642 (6.23/day) Thanks: 1,784 Thanked 2,630 Times in 1,984 Posts System Specs	How is the drive connected to the computer? I've had problems with computers not being able to consistently see all 3TB of a drive when connected via USB. Also, it's possible the drive is no good. I would run Data LifeGuard Diagnostics and see what it concludes. __________________ Golden Rule of Programming: Never assume. try { SteamDownload(); } catch (Steamception ex) { RageQuit(); }

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Mar 24, 2013, 03:30 PM	#24
newtekie1 Semi-Retired Folder Join Date: Nov 2005 Location: Indiana Posts: 17,898 (6.47/day) Thanks: 785 Thanked 5,184 Times in 3,753 Posts System Specs	Yeah, something is not right here. Even if it is formatted as MBR, Disk Management should still see all the space, it will just list the extra space that can't be used due to to MBR as unallocated. Edit: After some quick googling it seems to be an Intel RST driver issue. See here: http://www.servethehome.com/fix-746g...d-drive-issue/ Updating Intel RST seems to fix the issue. __________________ Rig1: System Specs. Rig2: A8-5600K@4.4GHz / AsRock FM2A75 Pro4 / 8GB Corsair DDR3-1600 9-9-9-24 / HD7560D / Samsung DVD-Burner / 1.5TB WD Green + 3x3TB WD RED in RAID5 Rig3: Athlon X2 4200+ / M4A79 Deluxe / 4GB G.Skill Pi DDR2-800 4-4-4-12 / GT430 / Sony DVD-Burner / 500GB WD Rig4: Phenom II x6 1605T @ 3.6GHz / Asus M5A99X Evo / 8GB PNY DDR3-1600 9-9-9 / GTX470 & GTX470 / Samsung DVD-Burner / 1.5TB Seagate

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Mar 24, 2013, 03:47 PM	#25
johnboy Join Date: Mar 2013 Posts: 3 (0.03/day) Thanks: 0 Thanked 1 Time in 1 Post	I have an AMD processor, so in my case this wasn't the issue. The drive was connected by SATA. Other system deets: System Type: x64-based PC Processor: AMD Athlon(tm) Dual Core Processor 4450e, 2300 Mhz, 2 Cores(s), 2 Logical Processor(s) BIOS Version/Date: Phoenix Technologies, LTD 5.17, 09/10/2008 SMBIOS Version: 2.4

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