well first you need to go and have a poo and then think about it
The DVDs that you can rewrite many times are a DVD-RW and a DVD+RW. You can also rewrite a DVD-RAM more than once.
Rewrite is a record function, a dvd player is just that, a player.
CD-RW
You are unable too, DVD+R = Write once. DVD+RW= up to 1000 times rewriting. Hope that helps.
A DVD-R can only have data written to it once. The data cannot be erased or overwritten.Write-once DVD-R or CD-R can now be rewritten (only in Windows 7). Just format the disc into UDF file system; or, upon inserting a blank disc in the burner, Just choose LIKE A USB FLASH DRIVE among the 2 options, then format it.Full tutorial can be found athttp://mykenguerra.blogspot.com/2011/10/how-to-rewrite-on-dvd-r-and-cd-r.html
A DVD-R is a DVD that is writable only once, but a DVD-RW is one that you can write to multiple times, with each rewrite the size decreasing somewhat.
All blank DVD's will work however those with rewirteable can be erased and reused later on.
The "RW" in DVD-RW stands for ReWrite. It works like a flash drive. You can save data to a disc, delete the data and save to the disc again.
If it's a DVD ROM tou cannot. ROM = read only memory Answer 2: You have to use ReWritable DVD Rom Media in order to erase or change anything on the disk, just look for ReWriteable on the label.
DVD-R is compatible with over 90 percent of computer systems while DVD+R work with around 80 percent. The both hold 4.7 GB in the write and rewrite formats. Other than that, they are about the same.
You can't. Once it's already been finalized, it's like a DVD, you can't rewrite it.
Your laptop's DVD (or Blu-Ray) player would need to be one that can write/rewrite CD's and DVD's. If it does have that, either the laptop's pre-installed software, or a third-party software you can use to burn into a disk.