The easiest way to tell the difference between a DVD-ROM and DVD R is that a DVD-R or +R has a purple data side dye, whereas a replicated DVD-ROM is silver on the data side. Both types of disc offer 4.7GB of storage.įor submitting a master for DVD replication there’s no single preferred format, both of the above formats can be provided as a master source for conversion to a DVD glass-master and stamper. CD and DVD rewriters to see what’s available 6 products Sort by Asus Slim External DVD Writer - Black 4.601283 (1283) 28.99 Add to trolley Add to wishlist Asus Slim External DVD Writer - White 4.600304 (304) 28.99 Add to trolley Add to wishlist Asus ZenDrive U9M Ultra Slim DVD Writer - Black 4.800016 (16) 37. There are small technical differences in that the +R format allows for features such as a faster disc eject compared to -R, or additional menu functions, but these differences are negligible in the wider scope of things.

These days all modern writers support both types of DVD format. The other group, who support the +R format, are the DVD+RW Alliance, consisting of Sony, Yamaha, Philips and Dell. One group of manufacturers is known as the DVD forum, made up of Mitsubishi, Hitachi, Time Warner and Sony, who support DVD-R.

Early DVD writers were able to write only the -R or +R format, as manufacturers were split on which format to support.

Dvd cd readers and writers