Installing Windows 7 on GPT Hard Drive

originall

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My computer contains two hard drive, 3TB and 8TB and the motherboard is P67A-UD3-B3. When I tried to install Windows 7 on each of them separately, it was automatically converted to MBR and their sizes were limited to 2TB. Can it be fixed, meaning installing Windows 7 on each of them without loosing size, or should I consider buying a 2TB hard drive in order to avoid loosing size?
 

My Computer My Computer

At a glance

Windows 7 Ultimate x64
Computer type
PC/Desktop
OS
Windows 7 Ultimate x64
Why would you want Windows on 2 different disks? What are you trying to do, ideally?

Which of those 2 disks would you PREFER to put Windows on?

Booting from a drive greater than 2.2 TB requires GPT partitioning and UEFI, not BIOS. A system with BIOS cannot boot a GPT disk.

Does your motherboard provide BIOS or UEFI? That's an older P67 chipset so may be BIOS only.

Can you initialize the 8 TB disk as GPT and use it purely as a data disk, with no operating system? Maybe not on a drive that large with a motherboard that old.

Some motherboard manufacturers supply a downloadable bit of software that can work around the issue.

How much space do you need for C? I'd be tempted to buy a smallish SSD of maybe 128 GB and put Windows on it, using MBR.
 

My Computer My Computer

At a glance

Windows 7 Home Premium SP1, 64-bitIntel Skylake i5-6600K, not overclocked8 GB HyperX DDR4-2666 (2 x 4 GB)none; graphics are integrated on CPU
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Ignatz Special; 4 speed manual gearbox; factory air conditioning; one of one
OS
Windows 7 Home Premium SP1, 64-bit
CPU
Intel Skylake i5-6600K, not overclocked
Motherboard
AsRock Z170M Extreme 4, micro ATX
Memory
8 GB HyperX DDR4-2666 (2 x 4 GB)
Graphics Card(s)
none; graphics are integrated on CPU
Sound Card
onboard: Realtek ALC1150; external: USB Behringer UF0-202
Monitor(s) Displays
Dell S2340M 23 inch IPS
Screen Resolution
1600 x 900
Hard Drives
System: Crucial MX100 series SSD, 128 GB;
Data: Samsung Spinpoint 103SJ, 1 TB;
Backup: WD Caviar Green WD30EZRX-00D8PB0, 3 TB
PSU
Rosewill SilentNight 500 watt fanless, semi-modular
Case
Antec Solo II
Cooling
Noctua NH-U12S; Noctua F12 intake, Noctua S12A exhaust
Keyboard
Microsoft 200 6JH-00001 USB
Mouse
Dell or Microsoft optical wired; USB
Antivirus
Microsoft Security Essentials and Malwarebytes Premium
Browser
Pale Moon
Other Info
All fans PWM; speeds at idle: CPU circa 500 rpm; intake circa 600 rpm; exhaust circa 600 rpm; CPU temps 27 idle and 47 C load in a warm room (27 C/81 F) when running Intel Extreme Tuning Utility stress test.
At the beginning the operating system was installed on the 3TB, while the 8TB was the backup drive. However, the drive was recognized as 2TB only, so I tried to figure out it it's possible to define it correctly as 3TB. How can I tell if the motherboard supports UEFI? Google shows some results when typing "P67A-UD3-B3 UEFI", but I'm not sure. The ideal situation is that both of the drives contain their full sizes, if it's possible, since most the SSD sizes are too small for me, and the big ones (1TB+) are quite expensive. Should I pass on that 1TB, and leave it as 2TB instead of 3TB? Is it an issue of Windows 7 only, or will it be the same with other operating systems (Windows 8 / Windows 10) as well?
 

My Computer My Computer

At a glance

Windows 7 Ultimate x64
Computer type
PC/Desktop
OS
Windows 7 Ultimate x64
At the beginning the operating system was installed on the 3TB, while the 8TB was the backup drive. However, the drive was recognized as 2TB only, so I tried to figure out it it's possible to define it correctly as 3TB. How can I tell if the motherboard supports UEFI? Google shows some results when typing "P67A-UD3-B3 UEFI", but I'm not sure. The ideal situation is that both of the drives contain their full sizes, if it's possible, since most the SSD sizes are too small for me, and the big ones (1TB+) are quite expensive. Should I pass on that 1TB, and leave it as 2TB instead of 3TB? Is it an issue of Windows 7 only, or will it be the same with other operating systems (Windows 8 / Windows 10) as well?

Here's your motherboard at Gigabyte site:

GIGABYTE - Motherboard - Socket 1155 - GA-P67A-UD3-B3 (rev. 1.x)

which says:


"Hybrid EFI Technology combines the benefits of GIGABYTE's mature BIOS platform including stability and compatibility with 3rd party products with 3TB+ HDD support from EFI technology, allowing GIGABYTE to offer the best of both worlds through a quick and easy BIOS update using GIGABYTE's @BIOS utility that is freely available from the GIGABYTE website."

It's from 2011. Trying to decipher the marketing gobbledegook, my guess is that it has a BIOS and does not offer UEFI.

Which would mean you can't initialize it as GPT and use it as a boot drive. But I'd think you could use MBR, let it be restricted to 2.2 GB, and use it as a boot drive.

The "3 TB+" support thing is what I referred to in my first post--intended to allow you to see all the drive without going to GPT.


I have NO repeat NO idea if it works well or is a mess that should be avoided.

If you want to try it, you would go to the "utilities" download area from the above link and download and install the "3 TB Unlock" gizmo.

You may or may not have to also update your BIOS. I dunno.

I don't know if that 3 TB thing would be useful to you for your non-Windows drive. However: your motherboard may or may not support 8 TB drives of any type. You may ultimately be limited by that and be able to see only portions of the 8 or maybe nothing for all I know, even with the 3 TB unlock tool.

I don't know how much data storage you need and I don't know why you bought an 8 TB drive.

Windows needs only 20 GB. Why specifically would a 128 GB, 256 GB, or 500 GB SSD be "too small"?

Millions of people use SSDs of 128 GB and under. If you in fact have 1 TB of data as opposed to applications, then obviously it won't fit on a 500 GB SSD, but that's an unusual situation.

My inclination would be to do one of the following:

1: Buy a relatively small SSD and put Windows and applications on it, using MBR or GPT, whichever you want. Use the other drives for data only.

2: Put Windows on the 3 TB drive using MBR and concede the .8 TB it won't allow you to use--rather than get involved with that 3 TB unlock thing. You'd have to decide if that extra .8 TB is worth fiddling with that tool.

You probably paid a pile of dollars for that 8 TB drive, so you need to find out if you can use all 8 TB of it, with the unlock tool, GPT, or whatever else you can come up with. If you can't and it's limited to 2.2 TB, that's a big waste of money on unusable capacity. Is it returnable?
 

My Computer My Computer

At a glance

Windows 7 Home Premium SP1, 64-bitIntel Skylake i5-6600K, not overclocked8 GB HyperX DDR4-2666 (2 x 4 GB)none; graphics are integrated on CPU
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Ignatz Special; 4 speed manual gearbox; factory air conditioning; one of one
OS
Windows 7 Home Premium SP1, 64-bit
CPU
Intel Skylake i5-6600K, not overclocked
Motherboard
AsRock Z170M Extreme 4, micro ATX
Memory
8 GB HyperX DDR4-2666 (2 x 4 GB)
Graphics Card(s)
none; graphics are integrated on CPU
Sound Card
onboard: Realtek ALC1150; external: USB Behringer UF0-202
Monitor(s) Displays
Dell S2340M 23 inch IPS
Screen Resolution
1600 x 900
Hard Drives
System: Crucial MX100 series SSD, 128 GB;
Data: Samsung Spinpoint 103SJ, 1 TB;
Backup: WD Caviar Green WD30EZRX-00D8PB0, 3 TB
PSU
Rosewill SilentNight 500 watt fanless, semi-modular
Case
Antec Solo II
Cooling
Noctua NH-U12S; Noctua F12 intake, Noctua S12A exhaust
Keyboard
Microsoft 200 6JH-00001 USB
Mouse
Dell or Microsoft optical wired; USB
Antivirus
Microsoft Security Essentials and Malwarebytes Premium
Browser
Pale Moon
Other Info
All fans PWM; speeds at idle: CPU circa 500 rpm; intake circa 600 rpm; exhaust circa 600 rpm; CPU temps 27 idle and 47 C load in a warm room (27 C/81 F) when running Intel Extreme Tuning Utility stress test.
Put the Windows 7 drive in the OD and reboot the PC while tapping the one-time BIOS Boot menu key. Does it offer a UEFI or EFI DVD drive choice? If so boot it into the WIn7 installation media to delete all partitions, create and format new and it wlll convert to GPT and set Windows Boot Manager first to boot.

If no EFI choice on boot menu with DVD in drive, reboot into BIOS setup and look for UEFI, EFI, CSM, Legacy BIOS, or Secure Boot settings on all tabs.

If no UEFI, format a 1gb install partition for Win7, then after install in Disk Mgmt create other data partitions on the drive as desired.
 
That web page also says:

GIGABYTE DualBIOS™ now supports 3TB+ (terabyte) hard drive booting without the need for partitioning, and enables more data storage on a single hard drive.
so it must have GPT support.

May have to update the BIOS first from what this says:
best of both worlds through a quick and easy BIOS update using GIGABYTE's @BIOS utility that is freely available from the GIGABYTE website."
The board manual also says:
CD/DVD Boot Option
Set this item to EFI if you want to install the operating system to a hard drive larger than 2.2 TB. Make
sure the operating system to be installed supports booting from a GPT partition, such as Windows 7 64-
bit and Windows Server 2003 64-bit. Auto lets the BIOS automatically configure this setting depending
on the hard drive you install. (Default: Auto)


 

My Computer My Computer

At a glance

Windows 10 Pro X64Intel Quad Core i7-4770 @ 3.4Ghz16.0GB PC3-12800 DDR3 SDRAM 1600 MHzIntel Integrated HD Graphics
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Lenovo IdeaCenter 450
OS
Windows 10 Pro X64
CPU
Intel Quad Core i7-4770 @ 3.4Ghz
Memory
16.0GB PC3-12800 DDR3 SDRAM 1600 MHz
Graphics Card(s)
Intel Integrated HD Graphics
Sound Card
Realtek HD Audio
Monitor(s) Displays
HP 22" LCD
Screen Resolution
1680 x 1050
Hard Drives
250GB Samsung EVO SATA-3 SSD
2TB Seagate ST2000DM001 SATA-2
1.5TB Seagate ST3150041AS SATA
Keyboard
Dell USB
Mouse
Lenovo USB
Internet Speed
Cable via Road Runner 3MB Upload, 30MB Download
Antivirus
Windows Defender, MBAM Pro, MBAE
Browser
Seamonkey
Other Info
UEFI/GPT
PLDS DVD-RW DH16AERSH
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