The installer at one point asks if it should re-initilize all drives, or just one. This occurs even if there is only one drive. For clarity there should be a check that, if there is only one drive, only shows one option.
The installer at another point asks if the whole drive should be partitioned, or just the linux partitions. This occurs even if there are no partitions on the drive. For clarity there should be a check that, if there are no paritions on the drives, only shows the one option.

