Harddisk

A minidisc, depicted as a small, silver or gold optical disc housed in a square cartridge, its shutter positioned to the right.

Discontinued as an audio and data storage format in 2013 due to the success of CD and MP3 technology, though the emoji is commonly used to represent CDs, DVDs, and related film and music content, especially albums.

Samsung’s design previously featured a silver disc labeled MD, for minidisc. Early designs from au by KDDI showed an angled 💾 Floppy Disk, perhaps as being inserted or ejected into a computer drive.

See also 💿 Optical Disc and 📀 DVD.