Win 10Pro: Encrypted everything; now two drives are missing

It's been a long few days. I finally finished an upgrade from Win 10 Home to Pro and used Bitlocker to encrypt all my hard drives. Now, after rebooting, two of my hard drives (both SSD) do not show up in "This PC". And when I visit Disk Management, they are also not listed. They are just missing entirely.

I have no idea where to even start with this and would appreciate some help. I will happily provide any requested technical information.

Btw, I have never hated Windows more in my life.

It appears as though BitLocker did not complete encryption. I know this only because *one* of the ten times I shutdown/rebooted, it suddenly resumed at 94.5% and then.. hung. Drive is assumed toast. I have moved on to a new drive and am tediously reinstalling.

Wow, that's horrible.