Windows 10 PRO - 6TB RAID1 Drives Showing 2TB Partition: Disk Capacity Limitation or Error?

Question

Hello colleagues, I have a problem. Well, a few days ago I decided to extend the D: partition on my computer. I bought two 6TB drives and plugged them in RAID1 in place of the previous 2TB drives. After all files have been synced, unfortunately the computer still shows me the 2TB partition capacity. The question is, do Windows 10 PRO have any limitations in this regard? Or maybe I am making a mistake somewhere?

Thanks in advance for any answers.

jerzyf · Accepted Answer

It is a partition style issue, MBR supports disks up to max. 2TB, and above must be GPT style. Read about GPT on the net, but it must be supported by your CD.

dt1 · Answer

Welcome. Drop the disk management screen.

jackobt · Answer

In the attachment I am throwing two screenshots, one from the computer management, the other from the Intel Rapid program. My motherboard is Gigabyte Z97X-Gaming 5

mati211p · Answer

I guess you didn't expand the capacity after rebuilding RAID 1. Sometimes there is no expand capacity option or something like that? It shows you 6TB disks and 2TB surface in the program.

jackobt · Answer

The problem is that I approached the whole matter several times and extended it earlier, with this approach I actually forgot

In any case, the extension does nothing, unfortunately. After initializing and loading the bar to 100%, still nothing. The Intel Rapid program sees this RAID1 with a capacity of ~ 6TB, but unfortunately the system itself does not.

I have the impression that my colleague Jerzyf is right in this matter and it is a matter of partition style. I'm looking for information on how to do this. Do you have to format the system disk then? Maybe my colleagues will tell me more about how to properly carry out the entire process?

jerzyf · Answer

The link below has an article on how to convert a disk from MBR to GPT, but if this is applicable for RAID, I can't say.

PitD · Answer

Since you had 2TB disks and installed the system on MBR, you probably had Legacy mode in UEFI. To use 6TB, you first need to enable Secure Boot in UEFI.

jackobt · Answer

I have Bios installed, not UEFI. I understand that installing UEFI is tantamount to reinstalling the entire system?

PitD · Answer

Replace Legacy / CSM mode with UEFI only Boot mode selection: UEFI Besides, you have UEFI DualBios Then disk conversion. Maybe you will be successful. If not, you will have to put the system up again.

dt1 · Answer

Secure boot is not at all necessary for UEFI operation or GPT support.

jackobt · Answer

Problem solved, thank you very much for your help!

dt1 · Answer

Can you write how? This solution may be useful to someone in the future.

jackobt · Answer

I used AOMEI Dynamic Disk Manager Pro Edition and then turned on the assistant of this particular partition management program. With one button I changed the partition style to MBR. I haven't lost any data and the system finally sees 6TB.

dt1 · Answer

Thanks for presenting the solution

Windows 10 PRO - 6TB RAID1 Drives Showing 2TB Partition: Disk Capacity Limitation or Error?

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