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: Need clarification before proceeding to convert mbr-gpt

14 Feb 2015   #1
satrianiboys

Windows 10 Pro 64bit
 
 
Need clarification before proceeding to convert mbr-gpt

Hello everyone,

I will be doing this
Booting Windows 7 from a GPT Disk Using BIOS (non-UEFI) | Windows OS Hub
or
Boot Windows 7/8 from GPT on BIOS system : No hybrid MBRs or DUET!
procedure. But before i go, i want to ask a couple question. Since the links is old enough so i think i will not get any replies soon.. hopefully someone here will be reply this asap.

I have a 320gb HDD with windows 7 32bit (MBR) installed. The purpose i'll be doing that procedure (links) so my other HDD (3tb) will be fully detected and running fine. The question is, will it be detected and running fine? or do i have to re-install the OS to the other drive (3tb)?

I just want to make sure that i'm not waste any time. I prefer to keep the OS in the 320gb HDD though if there is any way, so i will not bother to backup my 3tb HDD (already have datas from a friend, and formatted as gpt)

my system is:
-AMD phenom x4 965be
-Asrock 770de3l

Sorry if my English is not correct. Thanks for the support.


My System SpecsSystem Spec
.
14 Feb 2015   #2
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

You can continue to use the 320 GB MBR 32 bit drive for the OS and then initialize the 3 TB disk as GPT.

You say "I prefer to keep the OS in the 320gb HDD", but you also say "I will be doing this
Booting Windows 7 from a GPT Disk Using BIOS (non-UEFI) | Windows OS Hub".

So, it's not clear to me what you want to do.
My System SpecsSystem Spec
14 Feb 2015   #3
satrianiboys

Windows 10 Pro 64bit
 
 

Quote   Quote: Originally Posted by ignatzatsonic View Post
You can continue to use the 320 GB MBR 32 bit drive for the OS and then initialize the 3 TB disk as GPT.

You say "I prefer to keep the OS in the 320gb HDD", but you also say "I will be doing this
Booting Windows 7 from a GPT Disk Using BIOS (non-UEFI) | Windows OS Hub".

So, it's not clear to me what you want to do.

Oh, I don't know that. So you're saying that my 3tb HDD will work properly if it's contain only data/not OS? I'm in fear that it will not detected fully (like detected only 2tb, or some partition missing) because the OS is installed in MBR drive.

I will get the drive in about an hours though, so i'm preparing for anything worse that might be happen now. I'm still a little confused then about MBR and GPT.

Thanks for reply
My System SpecsSystem Spec
.

14 Feb 2015   #4
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

Quote   Quote: Originally Posted by satrianiboys View Post
[

So you're saying that my 3tb HDD will work properly if it's contain only data/not OS? I'm in fear that it will not detected fully (like detected only 2tb, or some partition missing) because the OS is installed in MBR drive.

I will get the drive in about an hours though, so i'm preparing for anything worse that might be happen now. I'm still a little confused then about MBR and GPT.
Right now, my PC has 3 drives:

Boot drive is 80 GB SSD. It is initialized as MBR and has Win 7 64 bit installed.

Data drive 1 is 1 TB HDD. It is initialized as MBR and contains data only.

Data drive 2 is 3 TB HDD. It is initialized as GPT and contains data only.

All drives have just one partition.

I don't think the fact that you have 32 bit Windows is a problem as long as it's not on a GPT disk.

Try to initialize your new drive as GPT and see if it works and you can see the entire 3 TB capacity.

You could use MBR on the 3 TB disk, but that will reduce it's capacity to about 2.2 GB. Not good. Some older motherboards won't support GPT at all, but if you have fairly recent hardware you should be OK.

Here's some info on MBR and GPT as I understand it:


You can use an MBR boot disk of 2.2 TB or less and a separate GPT data disc on the same system.

Booting a GPT disk requires UEFI and 64 bit Windows.

Data drives must be GPT to utilize more than 2.2 TB on a drive, REGARDLESS of the number of partitions. If left as MBR, you are limited to 2.2 TB in one partition and can’t make a second partition of the remainder. Some motherboard manufacturers provide a special driver to let MBR drives access the full capacity of drives larger than 2.2 TB.

Booting from a partition greater than 2.2 TB requires GPT and UEFI, not BIOS.

Non-bootable partitions above 2.2 TB require initialization via GPT, but can still use BIOS. MBR partitions are limited to 2.2 TB, whether they are system or data partitions.

You can convert a GPT disk to MBR and vice versa, but only after removing all partitions.
My System SpecsSystem Spec
14 Feb 2015   #5
gregrocker

 

Agreed, just add the new 3tb drive and initialize it in Disk Mgmt as GPT, creating as many partitions as you want.

This has nothing to do with the 320gb MBR OS drive.
My System SpecsSystem Spec
15 Feb 2015   #6
satrianiboys

Windows 10 Pro 64bit
 
 

Quote   Quote: Originally Posted by ignatzatsonic View Post
Right now, my PC has 3 drives:

Boot drive is 80 GB SSD. It is initialized as MBR and has Win 7 64 bit installed.

Data drive 1 is 1 TB HDD. It is initialized as MBR and contains data only.

Data drive 2 is 3 TB HDD. It is initialized as GPT and contains data only.

All drives have just one partition.

I don't think the fact that you have 32 bit Windows is a problem as long as it's not on a GPT disk.

Try to initialize your new drive as GPT and see if it works and you can see the entire 3 TB capacity.

You could use MBR on the 3 TB disk, but that will reduce it's capacity to about 2.2 GB. Not good. Some older motherboards won't support GPT at all, but if you have fairly recent hardware you should be OK.

Here's some info on MBR and GPT as I understand it:


You can use an MBR boot disk of 2.2 TB or less and a separate GPT data disc on the same system.

Booting a GPT disk requires UEFI and 64 bit Windows.

Data drives must be GPT to utilize more than 2.2 TB on a drive, REGARDLESS of the number of partitions. If left as MBR, you are limited to 2.2 TB in one partition and canít make a second partition of the remainder. Some motherboard manufacturers provide a special driver to let MBR drives access the full capacity of drives larger than 2.2 TB.

Booting from a partition greater than 2.2 TB requires GPT and UEFI, not BIOS.

Non-bootable partitions above 2.2 TB require initialization via GPT, but can still use BIOS. MBR partitions are limited to 2.2 TB, whether they are system or data partitions.

You can convert a GPT disk to MBR and vice versa, but only after removing all partitions.
Yay, you're right. No need to do anything, installed the HDD and it's working fine. That's really a good information you type, i learned something new today.

Quote   Quote: Originally Posted by gregrocker View Post
Agreed, just add the new 3tb drive and initialize it in Disk Mgmt as GPT, creating as many partitions as you want.

This has nothing to do with the 320gb MBR OS drive.
Thank you for confirmed more!

===

Thanks for both of you guys
Solved
My System SpecsSystem Spec
Reply

 Need clarification before proceeding to convert mbr-gpt




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Clarification
Which component of a "Dell System" constitutes it still being Dell. I replaced my dell mobo with a modified Gigabyte, modified to fit my "DELL" case. I asked for help on this forum and was told my installation was counterfeit becasue i used the gigabyte mobo on an installation of a "Dell Oem Win "...
General Discussion
help sfc clarification
what is the difference of sfc /scannow and sfc /revert?? hmm is sfc /revert or /scannow can crush my existing theme?example im using 3rd party theme the i use the command sfc /scannow,what will happen.i actually avoid using the the commands in my current theme.
Performance & Maintenance
Need clarification
I have the followings... 1. System Repair disk ( one disc) I created at the beginning. 2. System Image backup ( weekly ) on external hard drive. 3. Factory Default disks ( set of 4 ). Factory Default disks are my recovery disks. I know that. Question : When or under what situation do I...
Backup and Restore
Clarification (x86)
Win7 64 bit (initially upgraded from Vista, subsequently upgraded to 64 bit) There are 2 Program Files directories under root C. One with an (x86) suffix and the other with no suffix. 1. Am I correct that the x86 extension implies that all programs listed under are 32 bit whereas absent the...
General Discussion
clarification please
I've just started to over clock my CPU...from with in the CCC panel and not the BIOS....I know. My question is; when over clocking is there a direct relationship with the overclock and temperature increase. I assume so. So, due to the close proximity of the GPU to the CPU I've noticed with each...
PC Custom Builds and Overclocking
need some clarification
I need some clarification on SLI vs Crossfire. What they are and what they do and the advantage of doing so? Next, what is a dedicated Physics card? How can I use a dedicated physics card? Can I have either a SLI or Crossfire setup in conjunction with a dedicated Physics card? Now in mu current...
Graphic Cards


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 05:52.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App