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.
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.