So it seems to be an hardware bug. To confirm this hypothesis with my case, the installation disc I used was a Verbatim CD-R on a Sony Optiarc AD-7170A with firmware version 1.02 while 1.05 is available here http://www.sony-optiarc.eu/supportservice/downloads/archive/downloadsarchive/dvddrivesdesktoppcs/ad7170a.html with the following from the release notes : «Media compatibility improved»
But then, one question remains: Why is this bug triggered only by the Alternate disc for quite some time now and apparently Debian 5.1 DVD installation ? (there must be some aspects of the installer that triggers the bug) and then, could it be a way to circumvent/mitigate this bug by changing the drive parameters with hdparm and special command to slow down speed, reset the drive or maybe disable cache/DMA/PIO/prefetching/... ? -- Alternate install fails requesting same disc https://bugs.launchpad.net/bugs/360460 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
