The link provided by Shannon is undoubtly usefull,
thank you Shannon, especially for its CD raw reading
section.
But the advise on specifying padsize for writing a CD
may required some attention before being used,
moreover for a data cdrom. You might be interested by
some other links, and other advises:
http://www-128.ibm.com/developerworks/linux/library/l-cdburn.html
http://www.uk.freebsd.org/doc/en_US.ISO8859-1/books/handbook/creating-cds.html
http://www.cdrfaq.org/
http://applications.linux.com/applications/04/11/16/1555246.shtml?tid=13&tid=47
--- Connie Sieh <[log in to unmask]> wrote:
> Shannon,
>
> I will add this to the release notes.
>
> Thanks
>
> -Connie Sieh
> On Tue, 2 Aug 2005, Shannon V.
> Davidson wrote:
>
> > I used to have trouble burning CDs until I
> discovered the instructions
> > at
>
http://www.troubleshooters.com/linux/coasterless.htm.
> Your mileage
> > may vary, but now I always use the following
> command and don't have any
> > problems:
> >
> > cdrecord dev=0,0,0 speed=16 padsize=63s -pad
> -v -eject -data
> > /tmp/name.iso
> >
> > Note: to figure out the device, use cdrecord
> -s -scanbus
> > Note: use a slower speed, if you have a
> slower CD writer
> >
> > Shannon
> >
> >
> > Troy Dawson wrote:
> >
> > > Hello,
> > > We cannot change the md5sum ... because they are
> correct.
> > > Here is the output from ftp.scientificlinux.org
> > >
> > > # md5sum SL.305.072605.i386.disc1.iso
> > > a031f04f101f5e627cc95350d2d008a1
> SL.305.072605.i386.disc1.iso
> > > #
> > >
> > > I'm sorry your having trouble downloading.
> > >
> > > The CD check also isn't automatic, it asks you
> if you want to do it,
> > > so I'm not quite sure what you are meaning by
> this. I think it's a
> > > good thing.
> > > Just as some people might get a bit or two mixed
> up in downloading,
> > > not all CD's get all the bits right either.
> > > Not all CD media is created equal. There is
> alot that just plain will
> > > not burn a full 700 Meg cd, no matter what it
> says on the label.
> > > Not all CD burners are created equal either.
> I've had a couple that
> > > gradually died, and it was these checks that
> brought it to my attention.
> > >
> > > Troy
> > >
> > > hilare wrote:
> > >
> > >> Hello,
> > >>
> > >> checking md5sum on the 072605 ( 26 july 2005 )
> iso for
> > >> SL305 / i386, reports :
> > >> ""SL.305.072605.i386.disc1.iso: FAILED"", the
> other
> > >> iso images are fine.
> > >>
> > >>
> > >> I had downloaded twice the
> > >> SL.305.072605.i386.disc1.iso, first from
> > >> ftp.scientificlinux.org, second from
> > >> linuxsoft.cern.ch/scientific (http), the
> problem
> > >> remains, and the md5sum files are the same on
> the two
> > >> websites :
> > >>
> > >> ""
> > >> a031f04f101f5e627cc95350d2d008a1
> SL.305.072605.i386.disc1.iso
> > >> daf41b883de342945de968a8731eb033
> SL.305.072605.i386.disc2.iso
> > >> 8e655e6f64f241c4ac5c45c591aa21b6
> SL.305.072605.i386.disc3.iso
> > >> 58f916a94de7017233234101e9270afa
> SL.305.072605.i386.disc4.iso
> > >> ""
> > >>
> > >>
> > >> Calculating the checksum via md5sum --binary on
> > >> SL.305.072605.i386.disc1.iso (CERN), gives :
> > >> b4712d89a65d5e53174847fd4b5c9b5e
> > >>
> > >>
> > >> 1/ could you confirm this last value is the
> good one ?
> > >>
> > >> 2/ could you correct the md5sum file for SL305
> / i386
> > >> ?
> > >>
> > >>
> > >>
> > >>
> > >> Appart from this problem, SL304 and SL40
> autocheck
> > >> feature ( at the start of install from CD )
> always
> > >> failed for every disks ( 1 to 4 ). I guess the
> > >> checksum remained on the RH disk one. Please
> consider
> > >> this is not any comfort request, quite contrary
> a
> > >> verification tool not reporting anything 'ok'
> during
> > >> an install, is a definitive stopper for every
> 'quality
> > >> insurance' driven service contract, and
> potentially a
> > >> cause to fire out a system administrator for
> taking
> > >> the responsability of installing a system with
> > >> 'corrupted' sources. So my request is either :
> > >>
> > >> 1/ please disable the autocheck feature
> > >>
> > >> 2/ or replace the checksums with the
> corresponding SL
> > >> disk checksums.
> > >>
> > >>
> > >>
> > >> Thank you
> > >>
> > >>
> > >>
> __________________________________________________
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> > >
> > >
> > >
> >
> >
> >
>
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