Patch to ignore bcache in os-prober is published already in 2017: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864246
All advises to use GRUB_OS_PROBER_SKIP_LIST are irrelevant as this list is applied to the results of os-prober. And the error message appears during run of os-prober. ** Bug watch added: Debian Bug tracker #864246 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864246 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886206 Title: os-prober fails to reload ioctl on a bcache device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/1886206/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
