As I said I've prepared a fix and it's waiting for upload to Oracular. In the meantime I've done some test builds here: - https://launchpad.net/~ubuntu-uefi-team/+archive/ubuntu/build/+build/28929792 - https://launchpad.net/~ubuntu-uefi-team/+archive/ubuntu/build/+build/28929800
After these are built (will be a few hours), you can test these, they are based on the 2.12-5ubuntu5 sources that I can no longer reproduce the regression on. 1. Install the packages on an Ubuntu installation 2. Boot into GRUB, and verify the package version to be 2.12-5ubuntu5~ppa1 by running `set` 3. Run `set debug=peimage` to enable PE loader Debug messages 4. Try to chainload Windows using `chainloader PATH` then `boot` The above sequence correctly boots multiple Windows versions for me (on the GRUB referenced above). Please note that the test GRUB isn't the same as the one currently available from the Oracular archive or ISOs (but it will be by Oracular Beta). If it somehow still doesn't boot with the test GRUB, please show the debug messages produced from the above. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2078307 Title: Grub 2.12 in Oracular is unable to boot Windows using chainloader To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/2078307/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs