You have Windows installed on /dev/sda in UEFI mode, but you installed Ubuntu to /dev/sdb in bios mode. You need to boot the Ubuntu install disc in UEFI mode and install it that way instead of in bios mode.
** Changed in: grub-installer (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1549325 Title: install ubuntu in a laptop toshiba To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1549325/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs