Talk:CDfs

Linux

The aricle says that CDFS is a virtual linux file system.
First of all, it is not virtual. The cd has its own standard file system.
Second, it is not a linux file system. Majority of the CDs have the cdfs file system in it and can be read by unix, linux, mac os x, and windows.

I think you better make a correction. Unsigned comment by 61.3.237.16 at 12:17, 1 August 2005 (UTC)

The name of that file system would be ISO 9660. "cdfs" just happens to be the name of the ISO 9660 file system driver on many operating systems. The Linux "cdfs" driver is described here because it's notably different. —Ghakko 12:49, 1 August 2005 (UTC)

And in my experience, an RW disc with the CDFS file system becomes unusable after a relatively few uses adding files to the disc (at least it did when I used the CD Wizard built into Windoows XP SP1). --John R. Sellers 03:15, 16 September 2006 (UTC)

i agree on any suggestions, comments, corrections because i dont see anything wrong, i would like to note that there should be a link to the linux documentation project which has its own well documented referals mostly compliant with the gnu gpl license e.g. http://tldp.org/HOWTO/Filesystems-HOWTO.html Unsigned comment by 84.245.166.18 at 01:49, 31 December 2006 (UTC)

The report is listed as unconfirmed, but in fact I know it to be true since it actually happened to me... it is only unconfirmed in the matter that no one else has tried it yet. also there are possibilities that some other program affected the disk so I am asking for multiple confirmation from the Wiki community...  :) Unsigned comment by 24.148.6.235 at 01:36, 25 July 2007 (UTC)

There seems to be a whole lot of confusion here. There is no such a thing as a standard CD filesystem named CDFS. Data tracks on compact discs are specified in the Yellow Book. Those data tracks almost always contain an ISO 9660, UDF or HFS file system. Many operating systems have drivers for mounting ISO 9660. Some of those drivers happen to be named CDFS, as on Windows, Digital Unix/Tru64, some variants of BSD and BeOS. On Linux, however, "CDFS" refers to something completely different, hence the article.

I hope that clarifies things.

—Ghakko 16:04, 24 July 2007 (UTC)

For those who are curious, the "something completely different" is a virtual file system module ("file system driver") for Linux, named "CDfs"; it doesn't implement access to ISO 9660 file systems on a CD-ROM, it provides raw access to tracks on a CD, regardless of how the bits on the track are formatted (ISO 9660, CD-DA, etc.).

It could be considered a "virtual file system" in the sense that it shows the track structure of a CD as a flat file system, with each track being a separate file, so it's presenting something not designed as a file system as if it were a file system. The only implementations of such a file system I know of are the Linux and Plan 9 ones; I don't know whether any other OSes have a mechanism to access raw CD tracks in that fashion (macOS has "cddafs", which provides access to the tracks of an audio CD - CD-DA - as audio files if the CD in question is mounted, but I don't know what would happen if you tried to manually mount a CD-ROM or other non-CD-DA CD using cddafs).

This page used to discuss that; it now redirects to ISO 9660. The edit summary for the change that made it a redirect is "Non-notable, unsourced. Any mentions of CDfs are just for the regular CD filesystem so redirecting this there is useful." I'm not sure that the Linux CDfs or the Plan 9 "cdfs" are particularly notable; there are some sources for it that I found (https://users.elis.ugent.be/~mronsse/cdfs/, https://wiki.christophchamp.com/index.php?title=CDfs), but I'm not sure they establish notability. Their existence does demonstrate that there are references to "CDfs" outside Wikipedia that refer to the "CDfs" VFS in question, but I've fixed Wikipedia pages that link to CDfs either to:

• just speak of ISO 9660, if that was the intent;
• speak of the Linux "CDfs" in question, if that was the intent, but not link here;
• not to speak of it at all, if it's a template full of links to pages about file systems. Guy Harris (talk) 22:02, 20 December 2024 (UTC)

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