what does the + or - mean after DVD(DVD-R) (DVD+R)?
142408
There are actually five formats for storing data on DVDs:  DVD-R, DVD-RW, DVD+R, DVD+RW and DVD-RAM.\n\nThe + and - don't have any special meaning, they just refer to two different standards (see below for details).  Some DVD drives/players only work with one of the standards and not the other, some work with both.\n\nThe "R" means "Read" (i.e. once you've created the disk, you can only read the data) and the "RW" means "Read/Write" (you can write new data to the disk multiple times, in addition to reading it).
246805
It is a format difference originally between manufactures. Now most DVD players will read either +R or -R. There is supposedly a slight useage edge for -R but ability to read is what is important. I record all my DVDs in +R and I never have a problem playing them in any DVD player. \n\nMy computer burner will burn either format but I just started using +R and that is what I usually buy.\n\nNeither a +R or a -R are rewritable. For that you want a +R-RW or a -R-RW.
389698
It is a DVD that doesn't have any information on it (blank)\n\nYou use it with a DVD recorder if you want copy information (either movie, pictures, songs or anything) on it.
984935
It has to do with the Codex of the DVD.  Some DVD are R+, some R-, some have other codex.  You have to know what your DVD can play back.  Is it a machine that can only playback certian DVD's, or all?  If your DVD is not compatible with the way your DVD Burns, then you will not be able to play it back unless you purchase a DVD player that can read the codex that your DVD burner uses.
19411
It's not really a problem with either, some older players aren't compatible with DVD-R's, etc.  The player would say DVD-R, DVD-RW compatible on it.
57510
What does DVD mean?\n\nThe keyword is "versatile." Digital Versatile discs provide superb video, audio and data storage and access -- all on one disc.\n\nR - Read\nRW - Read/Write\n+ and - are different underlying formats on the disc that have been developed by different groups.\nMost recent DVD players and newer DVD drives can play/read most formats, but you should check the specifications to be sure.
203025
diff is that dvd-r and dvd+r are formats.. and it's a battle between the two. whoever wins.. right now dvd-r is winning.
977860
They are both the same, along with CD+R/W  it just means that one u can use over and over again and the other you can right to just once.  both hold 700MB. Your program u use to burn your data, there is always setting to "Overburn" but it can damage the disc or the drive.
619801
I had a tech at a computer store at my hometown explain the difference....... One is developed using a spiral circular formation and another is from the inside out..its hard to explain really in a sence..but if u want to know which one to burn on and have it most compatible, do the DVD+R cause more of your dvd players and driver do not support the DVD-R. I have 2 dvd burners on 2 different computers and have tested this thoeory already.
166204
There appears to be no physical, and little functional, difference between the DVD-R/-RW discs and the DVD+R/+RW discs. The DVD-R ("dash” R) and -RW media are officially approved by the group called DVD Forum, and the DVD+R ("plus” R) and +RW are not. The DVD+R/+RW media are supported by the DVD+RW Alliance.\n\nThe main difference seems to lie in the DVDs' built-in defects management, the way they can be formatted and, of course, their price.\n\nSOURCE : http://netforbeginners.about.com/cs/multimedia/a/DVD_discs_2.htm
6150
A combo drive is capable of handling bith DVDs and CDs.  If you see the letters -ROM, that means the drive can only be used to read disks.  -R, -RW, or +RW mean that the drive is capable of writing to disks as well. It's possible to get a drive that is DVD-ROM/CD-RW, which means that it will read and write to CDs, but only read DVDs.  Today though, a usable read/write drive that handles both CDs and DVDs can be had for under $40.
504333
i tihkn that is the region code. if the dvd is form another region than the us it will ask to change it u cna change it up to 5 times and then it will stop changing and u r screwed after the last time if hte region is not the on that u mainly use dvds in
515404
No. If it isn't accompanied by a DVD+R, DVD+RW, or a similar symbol, it won't burn DVDs. If it says DVD/CD+RW, it will burn CDs and play DVDs.
75913
The differences themselves are very technical, involving laser tracking and positioning.\n\nAll DVD-R's are writable DVD's, allowing users to burn information onto them.\n\nMany DVD players and/or DVD burners will only use a specific type of DVD (usually +r, but not always)
411835
Well the RW means you can rewrite over and over.\nThe +R and -R means it can only be written to once.\nI'm not 100% sure but I think -R means the dvd needs to be finalized for other dvd players to be able to read it. If anyone knows for sure please correct me.
900022
If it's saying that it's a DVD ... then congratulations ... you have a DVD ... whether it's a DVD Rom or a DVD Burner is another question entirely :)
951599
PC - In my experience the best software is Nero.  But your computer probably already came with something like Roxio.\n\nAnyway, as far as +/-.... I prefer the MINUS.  In my experience a greater number of DVD Players accept the minus discs (especially the older ones).  If you are just archiving data... there's probably no noticeable difference.