Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: A hard disk drive ( HDD ) , hard disk or hard drive , is a data storage device for computers which uses magnetic storage to store data .
A:
A hard disk drive ( HDD ) , hard disk , hard drive , or fixed disk is an electro-mechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks ( platters ) coated with magnetic material .