Spamlet wrote:
> A firmware update for our DVD recorder says it has to be written to disc
> 'using disc-at-once mode and ISO 9660 CD-ROM file system format'
>
> When I right click on the file and 'send to... write these files to disc' it
> just writes them to the disc.
> How do I tell what mode it used?
>
> XP Pro SP3
>
> This is on a laptop that is unfamiliar to me - mine not having a recordable
> drive - so I'm not sure of the set up, but there is a little note at the
> bottom of the right click dialogue that says something like 'service
> provided by Roxio'. Would I be right in assuming that the required format
> is just the standard one, or would I need to seek out the default settings
> somewhere (I wouldn't be an administrator on the borrowed m/c).
>
> Cheers,
> S
>
You don't want to be using the built-in IMAPI based writing capabilities
of the OS.
An ISO9660 file, is more than just a data file. it is an entire file system,
complete with the sectors necessary to support booting on a computer. It
is a miniature environment, all of its own.
If you "Send to" a file like that, you'll end up with a CD with one file
on it, "blah.iso".
If instead, you use a program like Nero (payware) or Imgburn (free), those
programs know how to take an image file, and convert it back into a piece
of bootable media. There could be hundreds or thousands of files inside
the ISO, and a proper burning program, will put all those files onto the
CD for you.
http://majorgeeks.com/ImgBurn_d4870.html
My guess is, the purpose of "Disk At Once" or DAO mode, is to do only
one session on the media, closing the session when finished. It is also
possible for optical media to support multiple sessions, like leaving the
session open, and maybe the device you're feeding this to, won't like that.
So Disk At Once, implies a one-shot recording, where the session is closed
properly at the end of the write.
http://en.wikipedia.org/wiki/Optical...ecording_modes
HTH,
Paul
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