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About the DVD:

  • DVD+R is printed on the disk, as well as - separately (!) - RW

enter image description here

I burned the 14.04 LTS *.iso on to that DVD in Win7, following standard procedure as listed on ubuntu.com

Should this DVD still be re-usable to burn other things on it? If so, how much of the original 4.7GB space should still be available for re-use?

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closed as off-topic by Radu Rădeanu, user68186, chaskes, Eric Carvalho, Rinzwind May 10 at 7:58

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This is not about Ubuntu. Questions about other Linux distributions can be asked on Unix & Linux, those about Windows on Super User, those about Apple products on Ask Different and generic programming questions on Stack Overflow." – Radu Rădeanu, user68186, chaskes, Eric Carvalho, Rinzwind
If this question can be reworded to fit the rules in the help center, please edit the question.

1  
If the question is too primitive, why not just answer y/n? (instead of silently down-voting) –  nutty about natty May 8 at 9:31
    
Blanking a CD/RW seems dated and only provides a hint, rather than a reliable and comprehensive doc. –  nutty about natty May 8 at 9:34
    
Your title is misleading. Is it DVD-R or DVD-RW? The former is not reusable, the latter is. Also it wouldn't hurt to Google a bit - en.wikipedia.org/wiki/DVD –  michy04 May 8 at 9:36
    
Can the close voters explain themselves? –  don.joey May 8 at 17:39
    
I can: This is not about Ubuntu; it is a hardware question :) –  Rinzwind May 10 at 7:59

4 Answers 4

If what you mean for the "separately" "RW" is something like this:

DVD +R

That means, literally, "The read-write characteristics of this disk are: DVD+R". Don't let the logo (the stylized RW) confound you.

So in this case you have a write-once media; you can't erase data.

The writable-once disks come in two flavors, DVD+R and DVD-R. Only the first ones allows you to add data if the disk is not full (multi-session).

So if you have a DVD+R disk, the general answer is "no, you can't" if you have closed the disk, or "yes, you can" use the rest of the capacity if you have not closed it by opening another session.

In this case, the answer is probably no, you can't because I think that the programs that write a bootable DVD also close the disk.

A real rewritable disc will have:

DVD+RW

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the top green picture is what it looks like indeed –  nutty about natty May 8 at 16:54

Your "DVD+R" "RW" may be a DVD+RW, which is reusable:

The recording layer in DVD+RW and DVD-RW discs is a phase change metal alloy (often GeSbTe) whose crystalline phase and amorphous phase have different reflectivity. The states can be switched depending on the power of the writing laser, so data can be written, read, erased and re-written.

Officially speaking, there is no such thing as "DVD+R" "RW"; it sounds like one of the various shorthand terms, like DVD±R/±RW, that are commonly used to describe the different formats of disks.

The easiest way to test this is to try writing a new image to the disk.

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It is not a DVD+RW, see updated title and question. –  nutty about natty May 8 at 15:36
    
There is no such thing as a "DVD+R RW", but it might be a shorthand term for DVD+RW. Answer updated. –  bain May 8 at 15:53

Im almost sure that will be able to re-use and save more files to the disc if its a DVD-R RW.

But i strongly suggest that you use a blank DVD-R, burn on lowest speed and close the disc for further recording. This method can prevent installing issues from LiveCDs.

If don't want to spend a whole disc to the ISO file you can always make a LiveUSB from UNetBooting or Universal USB Installer (Windows)

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Unlike DVD+RW discs, DVD+R discs can only be written to once. (...) This can cause confusion because the DVD+RW Alliance logo is a stylized 'RW'. Thus, a DVD+R disc may have the RW logo, but it is not rewritable.

Therefore the answer seems to be no: non-reusable (as in, non-rewritable), as has also been discussed in a previous SX Q&A.

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