Thanks, I was able to fix this, and while the SSD shows up during BIOS for startup, only my other hard drives can boot up Windows. I can see the new SSD in BIOS (I set it to first priority) as well as Windows disk manager, and all the partitions / files / allocated size look fine.
EDIT: I am running UEFI. I actually cloned an MBR disk (my current C drive) to a GPT target disk (the NVMe M.2 SSD). Perhaps this is causing the issue, and if so, how do I get around it? Note that the M.2 SSD is 4 TB, so I assume I need the disk to be GPT rather than MBR.
I'm using the 30 day free trial version of Macrium Reflect (Home). I cloned my C drive to the M.2 SSD (4 TB size), then realized it cloned the original drive (less than 1 TB in size) without extending to the full 4 TB of the SSD, meaning, the additional space of the M.2 SSD was unusable.
I've seen manual workarounds (like dragging and dropping the order of partitions, then hitting Extend) but still get an error that 2 TB per disk is the maximum? Is this really true? Why? How can I get the remaining 2 TB? I need 4 TB dedicated space for my work all on 1 drive, don't want files sitting around in other drives on the computer.
Also, when I booted from the new SSD, it worked, but ran into a bug where File Explorer would not let me right click on any drive as it would turn the mouse cursor into the spinning wheel. Can't X out File Explorer but can right click on the program and exit that way. I also named the new drive F but for whatever reason it is now showing up as G.
Should I just use another cloning software? If so, which? Thank you.