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Disc and disk are varient spellings of the same word that pre-exist computing. Disc is more common in British English, Disk more common in American English. But yeah since computing came along disk has also been used more for magnetic media (hard disk) while disc has been used more for optical media (compact disc). I wouldn’t be surprised if this only happened because of how the CD was marketed and branded as a “compact disc” as a trademark while hard disks and floppy disks etc were more generic terms.
In modern parlance, this has been my working understanding too:
But yeah since computing came along disk has also been used more for magnetic media (hard disk) while disc has been used more for optical media (compact disc).
Optical:
compact disc
laser disc
Magnetic:
3.5" diskette
800GB hard disk drive
…and just to point out there is some disagreement
Magneto-Optical , such as Sony MiniDisc, is sometimes referred to Disc for its optical properties and sometimes as a MO Disk for its magnetic properties.
Disc and disk are varient spellings of the same word that pre-exist computing. Disc is more common in British English, Disk more common in American English. But yeah since computing came along disk has also been used more for magnetic media (hard disk) while disc has been used more for optical media (compact disc). I wouldn’t be surprised if this only happened because of how the CD was marketed and branded as a “compact disc” as a trademark while hard disks and floppy disks etc were more generic terms.
In modern parlance, this has been my working understanding too:
Optical:
Magnetic:
…and just to point out there is some disagreement
Magneto-Optical , such as Sony MiniDisc, is sometimes referred to Disc for its optical properties and sometimes as a MO Disk for its magnetic properties.
Bloody English spelling… There’s a reason spelling bees don’t exist in some other languages.
We have a competition for spelling because English spelling is so bad at its job.