[Solved] macOS Sierra can't see my second hard drive

[jamesmcd]

This build will be the death of me. During installation, I could see my second hard drive just fine. I formatted it. Now that I'm in macOS, it's not showing at all - not even in disk utility. It's a Western Digital Black Edition 6TB.

What should I do?

 

[jamesmcd]

Also, it shows in BIOS, and if I go into the BIOS first and then boot, I can see the drive in macOS. Huh???

 

[jamesmcd]

Ok, hmm, this *seems* to have been solved by removing the extra drive from the boot order in BIOS. It doesn't have an OS so I removed it to keep things tidy - and yeah - it seems to now show up and mount in macOS. I'll keep an eye on it.