What is wrong with my RESTORE procedure? I'm trying to use Toad Freeware (my SSMS is totally broken) for the following restore command:

RESTORE DATABASE AdventureWorks2016
FROM DISK = 'C:\Database\MSSQL\Samples\AdventureWorks2016CTP3.bak'


The response is:

Lookup Error - SQL Server Database Error: Directory lookup for the file "D:\Program Files\Microsoft SQL Server\MSSQL13.DSMAIN\MSSQL\Data\AdventureWorks2016CTP3_Data.mdf" failed with the operating system error 21(The device is not ready.).


I don't even have a D drive. I suspect the original database files were stored on a D drive, but what do I do now?
I had the same issue. I ended up partitioning a D: drive, then it worked. Funny thing is that after it restored, D: drive was empty. :o