The E drive is a recovery drive that allows you to store needed files during an emergency recovery like system crashing, black screen, blue screen of death, etc. However, you sometimes will encounter E drive full Windows 10 error.

A computer drive is a hardware component that stores and retrieves digital data on a computer. It can be either a hard disk drive (HDD) or a solid-state drive (SSD).

A drive is a storage device used to store and retrieve data in the setting of computers. A computer's hard disc drive (HDD), solid-state drive (SSD), or other forms of storage devices like USB drives, memory cards, or optical drives can all be considered drives. Drives can be internal or external to the computer.

Disk drive (drive) – a computer device that stores and retrieves information, data, files, programs, etc., from a disk. The drive is often referred to by its letter (your drive letter may differ). A hard disk drive (hard disk or fixed disk) is usually designated as the “C: drive”.