This bug is not about enabling writes through disk filters, but about not writing on those systems as part of the boot logic. Support for writes and hence GRUB_SAVEDEFAULT is a separate feature request I'd suggest you to take upstream.
** No longer affects: grub2 (Ubuntu Bionic) ** No longer affects: grub2 (Ubuntu Focal) ** No longer affects: grub2-signed (Ubuntu Bionic) ** No longer affects: grub2-signed (Ubuntu Focal) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1274320 Title: Error: diskfilter writes are not supported To manage notifications about this bug go to: https://bugs.launchpad.net/grub/+bug/1274320/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
