4TB disk with GPT only showing 2TB

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Lanzendorf

Commendable
May 6, 2016
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I have a new 4TB WD Red which I have just added to my Windows 7 system. It prompted for a partitioning scheme and I entered GPT. However it shows the Disk as only having 1.678 TB available.

I have checked the partitioning in Disk Management and it shows a single GPT partition with these 1.678 TB.

I also have a 3TB Toshiba HDD in the same system which correctly shows the full capacity.
 
Solution
photonboy
**READ**
http://www.techpowerup.com/forums/threads/windows-7-and-4tb-hard-drive.202749/

Apparently this is related to the Intel drivers?

"Found out what's causing the probem.

It's the Intel Matrix Storage Manager. Once I've uninstalled it W7/DISLPART/etc see the whole 4TB."

**I'd first try updating the Intel software-> http://www.intel.com/content/www/us/en/support/detect.html?iid=dc_iduu

If that doesn't work, look for the same program as above in add/remove programs, or similar and hopefully that helps.

I believe you still want GPT->

a) Delete volumes (unallocated space is all)
b) GPT
c) format as NTFS

If that works fine, I'd then reformat but choose a FULL NTFS format instead of quick to let it build the bad sector table. That...
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photonboy

photonboy

Titan
Jun 20, 2006
21,567
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85,015


If there's no data, then simply delete all partitions (volumes) from within Disk Management and then format as NTFS.

update:
I'm not clear on how GPT works exactly, but I checked and my 4TB drive is formatted as NTFS and works just fine. I thought you would support a 4TB HDD as a secondary drive using GPT.

GPT is a better way to format (see link). You need UEFI motherboard supports if the boot drive is GPT, again not sure what the deal is for your situation. I wouldn't worry too much about it though.

http://www.howtogeek.com/193669/whats-the-difference-between-gpt-and-mbr-when-partitioning-a-drive/
 
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photonboy

photonboy

Titan
Jun 20, 2006
21,567
13
85,015
**READ**
http://www.techpowerup.com/forums/threads/windows-7-and-4tb-hard-drive.202749/

Apparently this is related to the Intel drivers?

"Found out what's causing the probem.

It's the Intel Matrix Storage Manager. Once I've uninstalled it W7/DISLPART/etc see the whole 4TB."

**I'd first try updating the Intel software-> http://www.intel.com/content/www/us/en/support/detect.html?iid=dc_iduu

If that doesn't work, look for the same program as above in add/remove programs, or similar and hopefully that helps.

I believe you still want GPT->

a) Delete volumes (unallocated space is all)
b) GPT
c) format as NTFS

If that works fine, I'd then reformat but choose a FULL NTFS format instead of quick to let it build the bad sector table. That will take a long time, maybe a day or so.


Other:
may want to consider Windows 10 while it's still free (til July 29th I think).
 
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Solution
C

christianrogari

Commendable
Jul 13, 2016
2
0
1,510
Hello,
do you have solved this problem?
I just bought a 4TB WD Red for replacing my broken old Maxtor DiamondMax22 (it was my backup disk), I have windows 7 PRO and my mobo is an ASUS P5Q-E and I'm encountering the same problem: the OS can see only one disc with just one partition (1678GB).
How must I do to fix the problem and get all the 4TB working right?
 
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