Table of Contents
Advertisement
Optical Disk Drive
DVDRW
DVDRW is a physical format for re-writable DVDs and can hold up to 4.7 GB. DVD+RW was created by the DVD+RW Alliance,
an industry consortium of drive and disc manufacturers. Additionally, DVD+RW supports a method of writing called "lossless
linking", which makes it suitable for random access and improves compatibility with DVD players.
The capacity of a single-layer disc is approximated as 4.7 x 109 bytes. In actuality, the disc is laid out with 2295104 sectors of
2048 bytes each which comes to 4,700,372,992 bytes, 4,590,208 kilobytes (KiB, binary kilobytes), 4482.625 megabytes (MiB,
binary megabytes), or 4.377563476 gibabytes (GiB, binary gigabytes).
DVD±R (also DVD+/-R, "DVD plus/dash R", or "DVD plus/minus R") is not a separate DVD format, but rather is a shorthand
term for a DVD drive that can accept both of the common recordable DVD formats (i.e. DVD-R and DVD+R). Likewise,
DVD±RW (also written as DVD±R/W, DVD±R/RW, DVD±R/±RW, DVD+/-RW, and other arbitrary ways) handles both common
re-writable disc types
DVD+RW must be formatted before recording by a DVD recorder.
● 8x DVD+/-RW drive
DVDRW Drive
There is a new drive offering from Dell for these systems that allows users to read and write DVDs and CDs. The drive is a
tray-loading drive that fits into the media bay. It uses a SATA interface.
Technology and components
35
Advertisement
Table of Contents
