> At update-grub time, you know if you are EFI and should search for an EFI bootable windows.
No, don't rely on the mode where grub-update is used ! Counter-examples: 1) Windows is installed in UEFI mode but update-grub is used from a Ubuntu32bit liveCD (which cannot be booted in UEFI mode, see Bug #1025555 ). 2) Windows is installed in UEFI mode, but update-grub is used from a Legacy mode live-session because the BIOS is set up to boot the CD/USB in Legacy mode 3) Windows is installed in Legacy mode, but update-grub is used from an UEFI mode live-session because the BIOS is setup to boot the CD/USB in UEFI mode. > an EFI booting system can't have a bios booting windows install. I am nearly sure of the contrary, because many preinstalled Windows come with both files to be booted in UEFI and Legacy modes. Examples: http://paste.ubuntu.com/1495850, http://paste.ubuntu.com/1479512 , http://paste2.org/p/2700549 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1024383 Title: update-grub generates only BIOS based menu entries for Windows, even on UEFI systems To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1024383/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
