I’m wanting to install DL10 but when i run the installer from my local machine i’m unable to select the mapped drive from the list?
is there a way to have the mapped drives show?

Ah, not with UAC enabled!

This is a common problem because people aren’t accustom to selected mapped drives from installers, but with UAC enabled you’re secretly entering another user context who doesn’t have the drive mapped. Easy workaround is to specify the UNC path here. The good news is that the installer is just copying files, so if the UNC approach doesn’t work just install locally and move the folder yourself after the fact.