Windows 10: I initialized and formatted both of my new HDD's. Can I still RAID 1 mirror them?

My NVME has the OS on it. I have two other 2TB HHD's that are brand new. I followed this tutorial to initialize and format them. All the tutorials I see for setting up RAID 1 mirror start with one or both of the hard drives not yet initialized/formatted.

Will I still be able to follow steps like this or this, or will there be extra steps I'll now need to do like undoing the format and returning one or both hard drives to "Unallocated"?

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:)

 

Trouble creating a RAID 1 Array

Originally, I wanted to create a RAID 1 Array using USB Drives lying around and test it out and see how well RAID 1 works. A message popped up when I clicked on the partition I wanted to mirror and said the operation failed because the Disk Management
Console is not up to date. It suggested I refresh it, relaunch it, or even restart my computer. I tried all three things, and it still wouldn't let me mirror the partition. Then I realized that maybe Windows won't let me create a RAID 1 Array on USB Drives,
so I went to the original plan I was going to do and grabbed my 500GB External HDD and my 120GB External SSD (they are both USB 3.0 connected enclosures) and when I tried to mirror a partition on my 500GB HDD using my SSD, it wouldn't let me use the SSD to
mirror it. So then I tried using my internal windows 10 SSD to mirror my HDD. But, I needed to shrink my main partition on my internal SSD and it wouldn't let me shrink it saying there was a certain amount I could shrink it to, but I could only shrink 135MB
at max and I have 89.4GB free on that partition. Any suggestions and help would be appreciated (and by the way, if you're wondering why I'm trying to run RAID 1 on an external HDD/SSD is just for testing and more file redundancy and performance).

 

Software Raid 1. Can not Add Mirror !


I can't Add Mirror to Disk 1 (from Disk 2)!







Windows 10 popup the following message.







What should I do . I don't want to buy a new HDD.

My OS: Windows 10 Pro Version 1607 x64

Thanks in advance

 

Software Raid 1. Can not Add Mirror !


Hi there

I believe to use mirror / striping in RAID 1 configuration on Windows you need to use Storage spaces - so set the 2 HDD's into a storage space and then you can adjust striping / mirroring.

How to set up RAID in Windows 10 - Windows 10 - Toms Hardware

Cheers
jimbo