the DVD recorder is like a VCR that can record onto an unlimited number of optical media. A DVR, on the other hand, has a built-in hard drive with a limited amount of storage for recording.

An optical disc (CD, DVD) or USB drive that contains a bootable ... to recover a failed system when the OS on the internal storage drive does not load. The OS on the bootable disk can be a very ...

DVD and Blu-ray discs magnetic storage devices, such as hard disk drives Solid state storage is a special type of storage made from silicon microchips. It can be written to and overwritten like RAM.