ef framework code first migrations with 2 DbContexts

enable-migrations -ContextTypeName EFTest.Model2 -MigrationsDirectory: Mig2

Add-migration -configuration EFTest.Mig2.Configuration Mig20001

update-database -configuration EFTest.Mig2.Configuration –Verbose

http://www.codeproject.com/Tips/801628/Code-First-Migration-in-Multiple-DbContext

only one context:
enable-migrations
Add-migration Mig0001
Update-Database