I got a 2014 13” machine. I popped a new NVMe drive into it. I can boot into recovery or 10.12 Sierra via external USB, but neither option lets me detect the new internal SSD via disk utility or terminal.

I don’t know how the new drive came formatted, and it wasn’t listed as specifically for Mac so I’d be surprised if it was APFS.

So, I’m hoping that an enclosure will let me address the drive so I can format and install macOS. Apparently it may matter that it’s internal.

Does that sound like a good plan or do you have any insight?