The difference between DVD-R, DVD+R, DVD+RW and DVD-RW explained
By Robert B.
There’s DVD+R, DVD+RW, DVD-R, DVD-RW, and even DVD-ROM! So what’s the difference between all of these different names, aren’t all DVDs the same? Well, it’s not quite that simple.
Let’s first start with the most obvious difference: some have R and some have RW. The “R” stands for recordable, while the “W” stands for rewriteable.
The main difference between DVD-R and DVD-RW, or DVD+R and DVD+RW is that the R disc formats can only be written to once, and then it is only readable and can’t be erased for the rest of its digital life. While RW discs are can be written to and erased many times, they are both readable and writeable.
“R” discs are perfect if they are only needed to be written to once, such as giving some files to a friend or transferring them between PCs. “RW” discs have their strength in the ability to be used many times over, which is great for routine system backups, etc. And naturally, the RW discs are slightly more expensive than the R discs, but you’ll have to decide if the trade offs are worth the money.
Now, onto the difference between DVD-R and DVD+R. As I just described above, DVD-R & DVD-RW are sister discs, the difference being one is writeable once, while the other is writeable multiple times. The same thing is true for DVD+R & DVD+RW. So the question is, what’s the difference between the plus and minus?
In order to explain this we must take a trip back in time. When DVDs were first being developed, there was no industry standard. Multiple companies were competing to develop what they hoped would be the dominant form of the future.
The DVD-R DVD+R difference can easily be summarized by the following:
* The DVD-R/RW standard was developed by Pioneer, and is used primarily by Apple and Pioneer. These “minus“ discs can only be written to in one layer on the discs surface. In addition, this format is supported by the DVD forum, but is in no way an industry standard. DVD-R/RW discs are cheaper than the “plus” format.
* The DVD+R/RW format is supported by Philips, Dell, Sony, HP, and Microsoft. These discs can be written to in multiple layers, giving them slightly better and more disc storage than the “minus“ format. Because of this additional capacity, they are slightly more expensive than “minus“ discs.
四年的点点滴滴，是我们送给SUKIRA的一份最真挚的心意
陪伴了我们四年的SUKIRA，也希望能一直一直继续下去
亲爱的李赫宰和特哥哥，看过这一张张图，你们有没有回忆往事呢？
谢谢你们给我们带来的这些美好，每天晚上都要听到你们的KISS才能入睡
SUPER JUNIOR KISS THE RADIO，四周年快乐！
发表于 16-8-2010 09:16 PM
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这。。如果是舌头的话会很恶心下
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