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Windows 7: 6TB HDD, but BIOS won't allow over 2TB

21 Mar 2017   #1
Escar Frazzle

Windows 10 Home 64-bit
 
 
6TB HDD, but BIOS won't allow over 2TB

I had a local guy install a new hdd on my PC and asked him to install a 6TB WD HDD. This is before I realized that I can't run a HDD over 2TB. Coincidentally I had already upgrade to two 2TB HDD's a couple of years earlier so I never knew about the problem with my BIOS yet. When he went to change them he found out it wouldn't work, so he partitioned the 6TB HDD in to two 2TB partitions and left the rest unallocated. That covers the needed back story to my problem lol.

Now comes the problem. I wanted to start getting into running a duel boot system and I was going to allocate some room from my D: drive which is the 2TB of my 6TB drive. So I shrunk the D: drive from 2TB to 1.5TB for 0.5TB of space for my other OS. After I shrank it I can't allocate any of it or even expand it back into my unallocated part. I'm not sure how he got it to work in the first place now. I'm new at this so I should add some info that you might need (even tho you won't need it, but something else lol) I have one of my old 2TB drives as Disk 0 for back up and my C: and D: drives as Disk 1. Wiping D: if need isn't a problem, but I would like to avoid wiping C: if I can, but I do have my image for C: saved on my old hard drive.

I do have Paragon Parition Manager to help, but it reads an error that says, "I/O error on hard disk drive 6 has occurred" when opening.

Any advice would be appreciated.

Here's the picture of Disk 1.




Attached Images
6TB HDD, but BIOS won't allow over 2TB-6tb-hdd.png 
My System SpecsSystem Spec
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21 Mar 2017   #2
lehnerus2000

W7 Ultimate SP1, LM18.2 MATE, W10 Home, #All 64 bit
 
 
SATA Controller

I had an issue when I first tried to install a 3TB HDD that sounds similar to yours (see link below).

Have you checked that you have the correct SATA Controller driver installed?

Check out this thread (post #4 onwards):
3TB HDD GPT Problems
My System SpecsSystem Spec
21 Mar 2017   #3
Escar Frazzle

Windows 10 Home 64-bit
 
 

Thanks lehnerus. I'll look into that. That's the funny thing about it, it worked when the PC guy did it, but after I shrunk it I couldn't extend it again, not even by a single MB. I'm reading your post now.
My System SpecsSystem Spec
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21 Mar 2017   #4
samuria

win 8 32 bit
 
 

Can you post a full disk manger showing all the details at the top
My System SpecsSystem Spec
21 Mar 2017   #5
Escar Frazzle

Windows 10 Home 64-bit
 
 

I'm using AMD's SATA Controller that's up to date. Can I use Intel's Rapid Storage Technology Drive instead?


Attached Thumbnails
6TB HDD, but BIOS won't allow over 2TB-disk-management.png  
My System SpecsSystem Spec
21 Mar 2017   #6
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

Quote   Quote: Originally Posted by Escar Frazzle View Post
I'm using AMD's SATA Controller that's up to date. Can I use Intel's Rapid Storage Technology Drive instead?
No. You have an AMD board, with an AMD SATA controller on it. There is no way to use Intel's driver. If you could even get the Intel driver to install, it would probably mess more than a few things up.

Your board also only supports SATA II drives, so I'm not surprised that the partitions are limited to 2TB. SATA III drives will work, just not at full SATA III speed.
My System SpecsSystem Spec
21 Mar 2017   #7
Escar Frazzle

Windows 10 Home 64-bit
 
 

Quote   Quote: Originally Posted by Mellon Head View Post
....it would probably mess more than a few things up.
lol. I knew that was stupid when I asked it, but everyone's born ignorant. Thanks for not flaming me.
My System SpecsSystem Spec
21 Mar 2017   #8
dg1261

Windows 7/8.1/10/XP multiboot
 
 

Quote   Quote: Originally Posted by Escar Frazzle View Post
This is before I realized that I can't run a HDD over 2TB. Coincidentally I had already upgrade to two 2TB HDD's a couple of years earlier so I never knew about the problem with my BIOS yet.
Your screenshot shows you are in fact running a HDD larger than 2TB, so I'm going to extrapolate your statement above to mean your BIOS does not support UEFI or booting from a GPT disk. Referring to the limit as "2TB" is misleading because it will depend on sector size. The 2TB limit is only true if you assume a sector size of 512 bytes.

You haven't stated, but I'll make a guess at other relevant facts: your HDD appears to be using a MBR partition layout rather than GPT, and your HDD is using a 4Kn ("4 KB Native") sector size. Please verify whether or not my assumptions are correct as follows:

In your Disk Management screenshot, right-click on the left end of the disk schematic (where it says "Disk 1") and select "Properties". Select the [Volumes] tab, and note the "Partition style". It should be either GPT or MBR. (I'm guessing MBR.)

Open a command prompt window and enter the following command: "fsutil fsinfo ntfsinfo c:"
Note the "Bytes per Sector" value. It should be either 512 or 4096. (I'm guessing 4096.)

Here are the ramifications of what you discover.

The MBR partitioning scheme allows for only four primary partitions, or three primaries with one extended partition containing one or more logical partitions. Your Disk Management screenshot shows four primary partitions already exist. So if it is indeed a MBR disk, you cannot create another partition. There's no way around that without deleting one of the other partitions.

The GPT partitioning scheme supports up to 128 primary partitions. However, if your BIOS does not support UEFI booting then you can't boot from a GPT disk. It can be used as a secondary disk, but not as your primary boot disk.

Based on your statement about the BIOS, plus the fact your screenshot does not show an EFI partition, I'm guessing it's initialized as a MBR disk.

Legacy HDDs used a sector size of 512 bytes. This is where the oft-heard "2TB" figure comes from, and is based on the maximum numbers of sectors a MBR disk can address. Your HDD, like all large disks today, will be called "Advanced Format" because it uses sectors of 4096 bytes internally. For compatibility with legacy systems, however, many large HDDs use an interface that makes each 4096-byte internal sector appear to the outside world as eight 512-byte sectors. This is called 512e ("512-byte emulated").

In 512e mode a large HDD can only use the first 2TB on a MBR disk. However, some operating systems are capable of using the HDD in "native" mode instead, seeing each sector as 4096 bytes--hence the term 4Kn ("4KB native"). The fact you appear to have a MBR disk showing up as more than 2TB suggests to me that it's 4Kn rather than 512e.

Per this reference, Windows 7 does not support 4Kn, but Windows 8 and 10 do.

Now, at this point let's note you're in a Windows 7 forum, but your System Specs indicate your OS is Windows 10. Thus, you're in the wrong place. Win7 doesn't support the disk configuration you're using, so your issue won't be familiar to most users here. The Win10 folks are more likely to be able to help you.

One final aside: you said it's a 6TB HDD, but the Disk Management screenshot is showing it to be a 5TB disk. I'm not sure what's going on there, but it's something else you may want to figure out.
My System SpecsSystem Spec
21 Mar 2017   #9
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

Quote   Quote: Originally Posted by Escar Frazzle View Post
lol. I knew that was stupid when I asked it, but everyone's born ignorant. Thanks for not flaming me.
I don't flame, my friend. I try to help.
My System SpecsSystem Spec
21 Mar 2017   #10
Escar Frazzle

Windows 10 Home 64-bit
 
 

All right, I'm in school today. That's why I came here. Don't know what to learn if you don't know what questions to ask.

The partition style is MBR and Bytes Per Sector are 512. Took me a second to realize I needed to run as admin. I told you I was a noob.

I was hoping to scoot by with windows 10. It looked like the responses here were quick. I knew I should have stuck with Win 7. I forgot I had a 5TB and not a 6, probably because I couldn't use all of it anyway, an oversight on my part. When you stated I can't have more than four partitions that was a problem, but only part of it. So adding a new one is out, but I'm still stuck not being able to extend D: after I shrunk it. I lost a half TB that I would like to get back.

Even though I upgraded, if you call it that, can I stay? I didn't want to lose support for 7 after a while.
My System SpecsSystem Spec
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 6TB HDD, but BIOS won't allow over 2TB




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