You can easily hide or show the “Macintosh HD” main hard drive and other removable drives by adjusting some Finder options.
- Launch the Finder Preferences from the “Finder” menu, or hit Command+,
- Under the ‘General’ tab, check or uncheck items you either want shown or hidden, respectively
- Close Finder preferences
These changes take effect immediately. Through these preferences you can adjust the visibility of Macintosh HD and other internal hard disks, external drives, CD’s, DVD’s, iPods, and even connected servers. Macintosh HD is categorized under ‘Hard disks’ so if you leave it checked it will remain visible.