I have been able to solve it temporarily by putting the hard disk in stand-by using the "hdparm -y" command.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1873334 Title: Secondary HDD hard drive spin down abruptly when shutting down or restarting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1873334/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs