DISC OR DISK? BOTH, ACTUALLY
Okay let’s sort this out once and for all. When IBM developed cheap, removable, secondary storage for computers in the late 1960s, the neologism “diskette” was born. It’s a play on disc and casette, see. Etymologically, “disk” is the older English spelling for a really flat cylinder and “disc” is the preferred medical spelling for bits of your spine.
Today, “disc” refers to optical media - DVD, Blu-ray, and CD. While “disk” is used for magnetic storage. As for the word “drive”, well the original diskettes needed something to spin them and read the information - and any machine that imparts motion to something loaded into it is traditionally called a “drive”.
Interestingly, the disc/disk distinction predates computers. At the BBC, transcription records (of interviews etc) were called “disks”, while commercially-produced gramophone records were called “discs”.