https://bugs.kde.org/show_bug.cgi?id=385635
Bug ID: 385635 Summary: verification appears to be via checksum comparison rather than actual data comparison Product: k3b Version: unspecified Platform: Debian stable OS: Linux Status: UNCONFIRMED Severity: normal Priority: NOR Component: Verfication Assignee: k...@kde.org Reporter: zcw...@aserty.com CC: mich...@jabster.pl, tr...@kde.org Target Milestone: --- version is 2.0.2 (I am in the process of burning the latest Debian DVDs for an upgrade) Checksum comparison seems a rather dubious way of verifying a burn and gains you nothing in performance: chrisw@acer-Aspire-5610:~$ time cat /dev/sr0 >/dev/null real 8m51.207s user 0m0.128s sys 0m10.596s chrisw@acer-Aspire-5610:~$ time md5sum /dev/sr0 9c8951b69992c0a14821da030f27198d /dev/sr0 real 8m49.449s user 0m29.040s sys 0m9.092s chrisw@acer-Aspire-5610:~$ time cmp /dev/sr0 '/work/Debian 9.1.0/firmware-9.1.0-i386-DVD-1.iso' real 8m49.058s user 0m32.916s sys 0m20.336s chrisw@acer-Aspire-5610:~$ Checksum(s) can still be calculated, but, I think it's important to do a proper read back check. A graph of the read speed would also be helpful in showing if the burned disc has any bad spots. -- You are receiving this mail because: You are watching all bug changes.