You can change data storage and data conversion preferences.

Select BaseCamp > Preferences > Advanced.

Disk Cache Size

Sets the amount of disk space used to store map data. Moving the slider bar toward the Better Performance option allows frequently viewed map data to load more quickly, but uses more space on your hard drive.

NOTE: The amount of space on your hard drive used by the BaseCamp™ application is shown below the slider bar.

Library

Sets the location where the BaseCamp application stores information on your hard drive.

Track Conversion

Sets the number of via points created when a route is created using a track.