Hi I've installed elementary OS twice before, once with install problem when using default so I always use custom now. In the latest effort I wish to overwrite an older 32-bit elementary OS, which has been used as a backup of OS Mint. Shown a picture of the install screen here.
Logically, I would choose sda, but some users could choose sda1. On custom screen suggest that hints as in google search drive layouts in short-form could help. Not sure if that's a good idea?