At Wed, 15 Apr 2009 18:22:28 +0200 CentOS mailing list centos@centos.org wrote:
Robert Heller a écrit :
An audio CD is not like a data CD. It does not have a 'file system'. It is a collection of data tracks, containing cdda files.
Yeah, I know. But then, AFAIK, dd is supposed to handle these "binary sausages" as well. Meaning: take that input (whatever it is) and produce output without asking what it is.
Correct me if I'm wrong.
Assumes that the device in question behaves (or can behave) as a raw sequencental block device. Audio CDs are not, strictly speaking, like a partitioned (or partitionable) hard drive. CD-Rom 'tracks' are NOT like disk partitions. ReadCD and Cdda2wav don't just to raw read() calls (which is pretty much all dd does). They do some interesting ioctl() calls specific to CD-Roms as well -- these I/O calls relate to 'seeking' to the proper track and figuring out big the track is, etc.
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