Hi, > I've built a test image now using the cherry-picked patch from 1.2.5, > and confirmed that the -partition_offset option now happily coexists > with -isohybrid-gpt-basdat
Thanks a lot for testing. > However, as the resultant image still appears to not have a valid MBR > partition table, there doesn't seem to be any advantage to adding this > option back to our builds for 12.10. So I think we'll leave it as is > with -partition_offset 16 disabled for now. Do you rather mean "no valid GPT" ? The MBR seems to be ok now. After all it made the difference between boot and not-boot. The GPT is there but it usually not recognized because the MBR is not trivial enough (not a "protective MBR"). This should have nothing to do with -partition_offset. If it has, then this would be probably another bug. I googled a bit and found: http://www.rodsbooks.com/gdisk/hybrid.html The described "Hybrid MBR" would differ from mjg's mainly by the type of the first MBR partition: 0xee rather than 0x00 im mjg's. So does it help GPT visibility to set byte 450 of the ISO image to the value 0xee ? (Byte count starting at 0) Have a nice day :) Thomas -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1062737 Title: hybrid images do not include a valid GPT To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-cdimage/+bug/1062737/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
