During the 1990's.
False, They can use optical storage discs.
Optical Discs
no
An optical drive is an input and output device. It reads data from optical discs like CDs and DVDs (input) and writes data to these discs (output).
Yes
Yes
A optical drive is essentially what you put CD's DVD's and install discs into.
cd, dvd, and vcd
Optical Discs
blu-ray
in a single track that spirals from the center of the disc to the edge of the disc
The BDXL format supports 100GB and 128GB write-once discs and 100GB rewritable discs for commercial applications. It was defined in June 2010.