Can't use new M2 SSD - Motherboard & Device Manager recognizes it, Windows Doesn't?

The circled images are the SN850 discussed in this thread.

I just bought a new 2tb WD Black SN850 SSD and I'm having trouble getting it working. I added it to the M2 slot on my already built/running system and I want to convert everything over to using the new drive. I currently have a 500gb Samsung 860 Evo SSD w/ Win10 as my primary and an old school 1tb hhd used just for storage of media. I'm wanting to copy everything over and just use my new SN850 with the others as backups.

My problem:

My MSI X570 Gaming Plus mobo recognized it in BIOS, Device Manager recognized it, the WD Dashboard recognized it (Firmware is up to date) and Macrium recognized it. All auto Windows updates had been downloaded and updated. However, Disk Manager, Windows Recovery and File Explorer would not recognize it at first. Once I used Macrium Free to clone my primary drive to my new SN850, those programs recognize it now but only as a 500gb capacity clone. It's as if it cloned over the exact storage/capacity of my primary and isn't even acknowledging there is another 1.5tb of unused space.

How do I utilize the rest of this space? Looking at it in Macrium, it looks like it recognizes it as a drive w/ 376gb of used space out of a maximum 465gb, with another 1.36tb that is greyed out and appears unusuable (pic link below, wouldn't let me attach image bc I'm new). Also, looks like it is formatted as MBR. Should I wipe and format it as a GPT, or is this okay? I don't need any of the extra partitions or to launch two different OS or anything crazy like that. I just play games at that's it.

Thank you all.

Solution 1:

Everything is fine. Yes, it's MBR, but that's not the issue. It mirrors disk 1 perfectly. There is no need to convert to GPT.

You have a lot of space that is currently not part of a partition. You cannot easily add it to the C: partition because the recovery partition is in the way.

You now have two options:

• Use a third-party partition manager to move the recovery partition to the end of the disk, then use Windows to grow the C: partition
• Create a new partition by right-clicking the unallocated space

There's some risk involved with moving partitions but the recovery partition isn't all that important anyway.

Next time when cloning a disk, adjust the partition layout as desired in the clone tool. All of them should support that.