Hi all, On Wed, Oct 13, 2010 at 11:15 PM, Raja Subramanian <[email protected]> wrote: > On Wed, Oct 13, 2010 at 10:37 PM, km <[email protected]> wrote: >> I have sucessfully burnt the iso image to CD after checking md5sums. >> But at installation, it quits while "copying files" quoting i/o error. > > IO error reading from CD or writing to your HDD? Dont know if it is CD problem. > >> is there a way to check the CD I have burnt ? > > Easy way: mount your CD on an working system and try > copying the entire contents of the CD to HDD. If you > get a read error, then the CD is buggered. i/o error while copying './casper/filesystem.squashfs so its confirmed that the CD has a problem
> You may as well do this on another computer to rule out > possible CD/DVD drive issues. > > Harder way: run as root, dd if=/dev/cdrom of=/tmp/test.iso > If it completes successfully, you have no errors on your CD. > md5sum of test.iso should match with your original iso images. ofcourse i tried this one also - the test.iso from the CD gave me md5shcheksum different from that of the downloaded iso image. > Smarter way: when you burn any iso to disc, ensure you > always verify after writing. But then I tried another thing, I was not sure if the downloaded iso image is OK. so I extracted the downloaded ISO image to a dir and did md5sum -c md5sum.txt whose output is ./casper/initrd.lz: OK ./casper/filesystem.manifest: OK ./casper/filesystem.manifest-desktop: OK ./casper/filesystem.squashfs: OK ./casper/vmlinuz: OK ... etc all OK this simply means that the filesystem.sqashfs file is fine with checksums but somehow it doesnt get right while burning it on the CD I have checked writing the downloaded ISO image on 4 CDs and all of them have trouble readng with this filesystem.squashfs from the burnt CD. Please let me know. thanks, regards, KM _______________________________________________ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
