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 > > >> > > >> > > >> > __________________________________________________ > > >> Do You Yahoo!? > > >> Tired of spam? Yahoo! Mail has the best spam > protection around > > >> http://mail.yahoo.com > > > > > > > > > > > > > > > > ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs