Am Mit, 2002-02-27 um 23.32 schrieb Alan Cox: > > > dd if=<your cd device name goes here/> of=MyLovelyMVSImage.iso > > > > I don't know why "everyone" recommends dd for this purpose. I've been > > using the easier cp command and it works perfectly well. dd has extra > > options, but they're not needed in this case. > > Basically Unix history. There was a time when you really did normally > have to use dd for this. Thirty odd years ago anyway 8) unfortunately not - it is the *nix present.
there are many many many conceptual failures in the *nix world, i.e. have configuration on sourcecode - compiletime - runtime commandline - os dependend config files - in diffrent locations - filesystem or remote. to circumvent these conditions is it wise to go the common denominator way - use the standard low level tools if they are doing the job. it is possible in some *nix derivates that you miss i.e. mkisofs; not to mention the various cp commandline parameters. the cp option is definetly the uglyest - it give you days of work to find out that the file and directory user and owner are _not_ copied, that you are missing some of the permissions ..... etc. etc. the appropriate commandline option is at mindest: cp -a indevice outfile this is not implemented in all *nixes, this is implemented in a diffrent manner in any version of your current version and distribution of *nix if it is. so if you are using a more complex command then needed - you will running into more complex problems - then needed. and this is true since thirty years ago. one exception of this could be darwinos in the future. dd bax
