I just tested the new code, and your updated regex still breaks the installation in exactly the same way as before. The portion of the regex that reads '/dev/[a-z]+' truncates the target to '/dev/nvme' before it gets to the bit you added. You should be able to use the following:
target = re.sub(r'(/dev/(cciss|ida)/c[0-9]d[0-9]|/dev/nvme[0-9]+n[0-9]+\ |/dev/[a-z]+).*', r'\1', target) ** Changed in: ubiquity (Ubuntu) Status: Fix Released => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1600308 Title: ubiquity targets invalid device name with nvme disks, fails to install grub To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1600308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs