Write may refer to any of the following:
1. When referring to data or a storage device, writing is the process of taking information and moving it to an alternate location. For example, saving data onto a diskette is the same as writing information to a diskette.
Almost all forms of media are writable, which means any information can be written to it. However, if a disk is write protected, or you don't have permission to write to the media, you will receive a write error when attempting to write information to that disk.
4. When dealing with permissions or security, write is a setting that gives the user or the computer the ability to write to a file. For example, if a file is set as read-only the computer does not have the write privilege and would not be able to edit or make changes to a file.