Re: What does the DVD media check if installing a new Fedora version? / Proposal
On 08/13/10 10:32, Joachim Backes wrote: > Hi, > > having the following question: What does the DVD/CD media check exactly > if booting a Fedora DVD/CD? Is it the sha256sum? If yes, why this media > check, because it could be done after having burned the DVD? > > If not, is it possible to perform this media check immediately after > having burned the DVD (means: can I start the media check from that > freshly burned DVD?) > > Proposal: If not, it would be nice if the media checker would be placed > on the DVD for running in normal mode after the DVD has burned - perhaps > allowing to check both an i386 and x86_64 install DVD. > > Kind regards > > Hi, Thanks to all who answered to my question: I think, checkisomd5 will be the right tool for me (I have only 1 DVD device, so DVD-burner and DVD-reader are the same). Kind regards -- Joachim Backes http://www.rhrk.uni-kl.de/~backes smime.p7s Description: S/MIME Cryptographic Signature -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
Re: What does the DVD media check if installing a new Fedora version? / Proposal
Once upon a time, Kevin Kofler said: > You can also run sha256sum /dev/cdrom and compare the result with the > published checksums. IIRC, you can in some cases get the wrong value with that due to padding (but it has been a while since I tried that, so that may not be a problem now). If you are looking at the master or mirror directory, you could use dd to only read the right number of bytes from the disk and pipe the output to sha256sum. -- Chris Adams Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble. -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
Re: What does the DVD media check if installing a new Fedora version? / Proposal
Joachim Backes wrote: > having the following question: What does the DVD/CD media check exactly > if booting a Fedora DVD/CD? Is it the sha256sum? If yes, why this media > check, because it could be done after having burned the DVD? You can already do this in K3b, there's a box you can check to verify the burned stuff. (If I'm not mistaken, it actually does a bytewise compare these days, not a checksum.) You can also run sha256sum /dev/cdrom and compare the result with the published checksums. Kevin Kofler -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
Re: What does the DVD media check if installing a new Fedora version? / Proposal
On Fri, 2010-08-13 at 10:32 +0200, Joachim Backes wrote: > What does the DVD/CD media check exactly if booting a Fedora DVD/CD? > Is it the sha256sum? If yes, why this media check, because it could be > done after having burned the DVD? You can, but you might strike this problem: The disc checks out fine on one drive, but reads badly on another. So a check checks the disc on that drive, and you may wish to check it reads fine when you use it on another PC. Or you may be happy to forgo re-checking it. > If not, is it possible to perform this media check immediately after > having burned the DVD (means: can I start the media check from that > freshly burned DVD?) > Some burning software already does checksum the burnt disc against the master, immediately after burning the disc. I think Brasero does that, I'm sure others do, too. -- [...@localhost ~]$ uname -r 2.6.27.25-78.2.56.fc9.i686 Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists. -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
What does the DVD media check if installing a new Fedora version? / Proposal
Hi, having the following question: What does the DVD/CD media check exactly if booting a Fedora DVD/CD? Is it the sha256sum? If yes, why this media check, because it could be done after having burned the DVD? If not, is it possible to perform this media check immediately after having burned the DVD (means: can I start the media check from that freshly burned DVD?) Proposal: If not, it would be nice if the media checker would be placed on the DVD for running in normal mode after the DVD has burned - perhaps allowing to check both an i386 and x86_64 install DVD. Kind regards -- Joachim Backes http://www.rhrk.uni-kl.de/~backes smime.p7s Description: S/MIME Cryptographic Signature -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
