Optical Drives Computer Maintenance
Optical drives is a generic term for CD, DVD and BluRay drives. They have similar media, a 120mm plastic polycarbonate disk with magnetic material that can store data but they are different. There are differences in the hardware and software that can compress data and differences in if the drive can read and write to both sides of the medium, and the number of layers it could use. CD or compact disk technology was invented in 1982 and it was for audio only; the average CD could hold 700 MB of data. DVDs or Digital Versatile Disk or Digital Video Disk were invented in 1995 and they were designed for audio and video; the average DVD could hold 4.7 GB. The BluRay was invented in early 2000s; a dual sided BluRay disk can hold 50 GB of data. The original CD and DVD drives were like HDD (hard disk drives), they started with IDE or ATA connections (ribbon cables) and MOLEX for power. With the ribbon cable connector, the computer had options of which drive (hard drive or optical drive) would be the slave and which would be the master. These values were stored in the BIOS (Basic Input Output System). The BIOS would tell the operating system where to find the information for booting and running the system. As technology progressed, the SATA connections were used for the hardware. The SATA power cable and SATA data cable look like the SATA cables used on hard drives. With the uniform size a DVD drive or BluRay drive uses the same size drive bay. What type of optical drive would use this cable for power? Select all that apply. CD drive DVD drive BluRay drive None of the above What type of optical drive would use this data connection? Select all that apply. CD drive DVD drive BluRay drive None of the above What type of optical drive would use this power connector? Select all that apply. CD drive DVD drive BluRay drive None of the above What type of optical drive would use this data connection? Select all that apply. CD drive DVD drive BluRay drive None of the above