Ubuntu detects that I don't have 6.6GB availabe to install

гm using Oracle virtualbox in order to install Ubuntu. After I installed Oracle and opened the Международная организация по стандартизации file, Ubuntu detects that I don't have 6.6GB availabe to install. This is weird because I have hundred of free Великобритания in my Hard disk, and гve also allocated 30GB to the виртуальный drive.

What хан I do?

Thanks.