The system drive is only called "C:" in Windows and MSDOS. What does Apple call it?
Nothing.
You, the owner of your Mac, can call it anything you like by writing its name in the window below its icon.
I usually call my boot HD: MacOs HD
But as said you can write anything you fancy in there.
-- Best,
Goran Finnberg The Mastering Room AB Goteborg Sweden
E-mail: mastering@xxxxxxxxx
Learn from the mistakes of others, you can never live long enough to
make them all yourself. - John Luther