CDFS

[bondy76]

Howdy
Does anyone know how to burn a dvd with the cdfs file system as my dvd player will play avi, xvid etc but will only accept cd's with this information on it. I borrowed a dvd from a friend wich has been done in the cdfs system!

Thanks allot for any help

Chris

[mats.hogberg]

Could it be, that it's just plain ISO9660, that Windows call CDFS?

/Mats
( http://en.wikipedia.org/wiki/CDFS )

[Cornucopia]

"CDFS" is what Windows tells users is the file system on AudioCDs. Problem is:
Audio CDs DON'T HAVE a file system. This was supposed to be MS's way of packaging stuff that newbies wouldn't understand into a form that they would just accept without getting all confused and frustrated. They're not helping the situation...

DVDs ONLY allow 1 kind of sector size: 2048 data mode user bytes.

CDs allow:
2448 for CD+G or CD+Text (audio + extra subcode)
2352 for (regular) audio --> AKA "CDFS"
2336 for data Mode2
2324 for data Mode2Form2
2048 for data Mode1, and Mode2 Form1 <-- Only comparable user sector size

Upshot of all this is: YOU CAN'T do it. Have to rip, decode, reauthor, etc., so it won't be the same thing.

Scott

>>>edit: I could be mistaken. If so, what guns1inger said is correct--that's just what Windows calls anything that's written to a CD/DVD in non-packet format.

[bondy76]

Cheers Mats. That worked. Just selected 9660 only and viola!

[guns1inger]

If so, what guns1inger said is correct

I didn't say it, but if it's correct, I'm happy to take the credit

[Cornucopia]

MY BAD! (sorry mats.)

(But note: DVD isn't supposed to have JUST ISO9660--it should be a bridge including (supposedly at all times) UDF). 'Course, if it works...

Scott

[Midzuki]

According to Wikipedia
{
which sometimes does manage to NOT suck
}:

CDfs is a virtual Linux file system that provides access to individual data and audio tracks on compact discs. A compact disc mounted with the "CDfs" driver appears as a collection of files, each representing a single track. It supports the following track types:

* Red Book audio: Appears as a WAV file; reading from it will start CDDA ripping.
* White Book video: Appears as a playable MPEG-1 file containing audio and video streams.
* Yellow Book data:
o Apple HFS: Appears as a mountable HFS file system image (sans partition table).
o ISO 9660: Each session appears as a mountable ISO image file.
o El Torito boot image: Appears as a single bootable disk image file.

CDfs is not included in the mainline Linux kernel, but is instead distributed as a set of GPL-licensed patches against the 2.4 and 2.6-series kernels.

On other Unices and operating systems such as Windows, CDfs can be the name of the ISO 9660 file system driver.

Plan 9 From Bell Labs also has a program called cdfs, it is a user space program that enables cd based operations, both reading and writing. Mounted cds present a directory with numbered files corresponding to CD tracks. Writing is a simple cp to either the data directory /mnt/cd/wd or the audio /mnt/cd/wa. rm /mnt/cd/wa && echo eject > /mnt/cd/ctl to fixate and eject. Tools are included to query cddb servers.

In theory, one can extract/create an AudioCD .bin image and then
record it on a DVD in "raw" mode --- but I still don't know what device or
what software would accept to play such disk.

===============

[Cornucopia]

No, you can't.

There IS NO raw mode in DVD writing. It was specifically not allowed (probably for the very reasons of not wanting users to make these selfsame non-standard discs).

And, if you rip an AudioCD, what you're really getting (not counting subcode--irrelevant, or CIRC--redundant on DVD) is simply an LPCM stereo track(s). Might as well make them WAVEs and have them be easier to work with...

Scott

[Midzuki]

Midzuki wrote:

In theory, one can extract/create an AudioCD .bin image and then
record it on a DVD in "raw" mode --- but I still don't know what device or
what software would accept to play such disk.

Cornucopia wrote:

No, you can't.

There IS NO raw mode in DVD writing.

Would that be a limitation inherent to the optical medium itself

=================

[Cornucopia]

It's a limitation in the spec(s) itself (All writable and rewritable DVD media). Like an API that only has a few calls available. You can't tell a DVD to burn in raw mode 'cuz all burners only accept calls in "user" mode. The rest is ALWAYS created on the spot from within the drive firmware (like EDC/ECC). Sectors other than user data are NEVER revealed to any application or call, just to the drive itself.
'Bout the nearest you can get to any "raw" adjustment at all is Bitsetting a +R/W drive to pretend the disc is ROM. And that's just one bit, which doesn't work on lots of drives.

Actually, it's not supposed to be a "limitation" in the negative sense. It "takes care" of alot of stuff automatically so software doesn't have to (this is where bad software writing could have screwed things up).

In "theory", one could rip the contents of a contents of an AudioCD (with all of its PQ and R-W subcode and all of it's CIRC code) and save that as a Bin file.
But to be USABLE (which is I think what most of us want), you want the important user data to be translatable from one APPLICATION type to another.
In this case, it's CDDA to ? (DVD-Video?, DVD-Audio?, SACD?, Data DVD?...)
Even then, if you just stick the bin on a disc, the best you can hope for is for use in a PC where you could MOUNT the bin with Daemon Tools, etc.
Otherwise, the non-userdata bits of the bin will be present ON THE USER DATA portion of the DVD along with the rest. You don't need them then (as they're specific to the application format (and often disc's physical format), so they're just getting in the way.

In a sense, it's LESS work to rip to just WAVE files.

Scott

[Midzuki]

Wakarimasu.
Arigatou gozaimashita.

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