Reusing DVD+RW disks with cdrecord
in [General Linux]
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From: Mark Hobley on 24 Jun 2010 16:20 On Mon, 21 Jun 2010 11:28:19 +0000, Kenny McCormack wrote: > This might be good advice if that's what you are looking for. I.e., if > you are looking for a "nice and easy to use GUI that hides those > details". I like to know details :) and I don't like GUIs :P > Otherwise, be a man and "man cdrecord". Search for "erase". You'll > figure it out. The man page doesn't actually say. The only reference to erase is as follows: Note that for unknown reason, the DVD-Plus alliance does not like that there is a simulation mode nor a way to erase DVD+RW media. DVD+RW only supports one write mode that is close to Packet writing; this mode is selected in cdrecord via a the -dao/-sao option. That doesn't really make much sense to me. Anyhow it turns out that to reuse a disk, just insert it into the drive, and perform the record operation as normal. Cheers, Mark. -- /local/home/mark/.Signature --- news://freenews.netfront.net/ - complaints: news(a)netfront.net ---
From: mjt on 25 Jun 2010 10:38 On Thu, 24 Jun 2010 20:20:54 +0000 (UTC) Mark Hobley <markhobley(a)yahoo.donottypethisbit.co> wrote: [snipped] > The man page doesn't actually say. The only reference to erase is as > follows: > > Note that for unknown reason, the DVD-Plus alliance does not like that > there is a simulation mode nor a way to erase DVD+RW media. DVD+RW only > supports one write mode that is close to Packet writing; this mode is > selected in cdrecord via a the -dao/-sao option. > > That doesn't really make much sense to me. Anyhow it turns out that to > reuse a disk, just insert it into the drive, and perform the record > operation as normal. Makes sense to me ... erasing first, then recording over that erased space is redundant - "recording over" is simply an erase-on-the-fly operation. Because new data are written over, the TOC will be re-written and the older data will be inaccessible (except with low-level tools). Rumor has it that you could possibly "erase" before writing new data using the "-force -format" switches: [cdrecord man page quote] -format Format a CD-RW/DVD-RW/DVD+RW/BD-RE disc. Formatting is currently only implemented for DVD+RW and BD-RE media. A 'maiden' DVD+RW or BD-RE medium needs to be formatted before you may write to it. However, as cdrecord autodetects the need for formatting in this case and auto formats the medium before it starts writing, the -format option is only needed if you like to forcibly reformat a DVD+RW or BD-RE medium. [/cdrecord man page quote] While we're on this subject, I'd like to touch on something ... it's something I feel is overlooked, yet very *important*. It has to do with the "cdrecord fork" which happened a number of years ago, but has lingered and is plaguing many users to this day. I have been a most-recent victim. In wanting to convert an avi file for use in a DVD format (i.e. so that it can be played in a DVD player), I ended up creating about 6 coffee coasters. And while doing research for some other options (software for format conversion), I came across some very valuable information at the "cdrtools" (cdrecord) website. I'm not going to regurgitate the information in this post, but will provide a link where you can read at your leisure: http://cdrecord.berlios.de/private/linux-dist.html Suffice it to say, I had this "broken fork" of cdrtools (better known as "cdrkit" or "wodim") installed on my current openSUSE 11.2 64bit system (it's the default package for openSUSE). I deleted the "cdrkit" package and its associated packages (and marked them as "taboo - never install") and then installed the "shily-cdrtools" packages. Guess what? The rip (avi->dvd conversion) went flawlessly the first and subsequent times and I've not had any other issues with the "cdrtools" utilities - with the "cdrkit" (buggy fork) utilities, I always had sporadic problems. I'm appalled that SUSE, and other distro vendors, knowing full well about this broken fork, and still includes the broken fork as the "default" !!! -- Good news is just life's way of keeping you off balance. <<< Remove YOURSHOES to email me >>>
From: Pascal Hambourg on 25 Jun 2010 11:26 Hello, mjt a �crit : > > Makes sense to me ... erasing first, then recording over > that erased space is redundant - "recording over" is simply > an erase-on-the-fly operation. This is technology-dependent, I guess. For instance, flash memory requires erase before rewrite because write can only change 1's into 0's, so you need to erase first to change all 0's into 1's.
From: Darren Salt on 26 Jun 2010 06:31 I demand that mjt may or may not have written... [snip] > I'm not going to regurgitate the information in this post, but will provide > a link where you can read at your leisure: > http://cdrecord.berlios.de/private/linux-dist.html Here we go again... > Suffice it to say, I had this "broken fork" of cdrtools (better known as > "cdrkit" or "wodim") installed on my current openSUSE 11.2 64bit system > (it's the default package for openSUSE). You might want to try cdrskin and xorriso, or something else which uses libburn and libisoburn (respectively). (I've not done so as yet, though.) For DVDs, I normally use growisofs (dvd+rw-tools). [snip] > I'm appalled that SUSE, and other distro vendors, knowing full well about > this broken fork, and still includes the broken fork as the "default" !!! Broken or not, it is at least distributable. (Old argument. Look it up yourself if you want more; it won't be hard to find.) -- | Darren Salt | linux at youmustbejoking | nr. Ashington, | Toon | using Debian GNU/Linux | or ds ,demon,co,uk | Northumberland | back! | Let's keep the pound sterling cricket: n. Rain-making ritual.
From: unruh on 26 Jun 2010 09:15
On 2010-06-26, Darren Salt <news(a)youmustbejoking.demon.cu.invalid> wrote: > I demand that mjt may or may not have written... > > [snip] >> I'm not going to regurgitate the information in this post, but will provide >> a link where you can read at your leisure: >> http://cdrecord.berlios.de/private/linux-dist.html > > Here we go again... > >> Suffice it to say, I had this "broken fork" of cdrtools (better known as >> "cdrkit" or "wodim") installed on my current openSUSE 11.2 64bit system >> (it's the default package for openSUSE). > > You might want to try cdrskin and xorriso, or something else which uses > libburn and libisoburn (respectively). (I've not done so as yet, though.) > > For DVDs, I normally use growisofs (dvd+rw-tools). Which uses what to actually write the dvds? > > [snip] >> I'm appalled that SUSE, and other distro vendors, knowing full well about >> this broken fork, and still includes the broken fork as the "default" !!! > > Broken or not, it is at least distributable. So is cdrtools. > > (Old argument. Look it up yourself if you want more; it won't be hard to > find.) > |