I have had this exact same problem in the past, and as a newcomer it did worry me. I actually still have the problem on 15.10 running on an old ThinkPad. <div class="gmail_quote">On Mar 30, 2016 16:10, "Peter Flynn" <<a href="mailto:peter@silmaril.ie">peter@silmaril.ie</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I encrypted the hard disk of my Dell D810 when installing 15.10 and it's been working fine -- with one oddity: when I give the encryption passphrase at boot time, I get two messages at the bottom of the screen: cryptsetup: unknown fstype, bad password or options? cryptsetup: sda5_crypt set up successfully It then proceeds to boot normally without error. My disk layout is: Filesystem 1K-blocks Used Available Use% Mounted on udev 1013792 0 1013792 0% /dev tmpfs 206268 5940 200328 3% /run /dev/dm-1 75506800 56022024 15626140 79% / tmpfs 1031332 18412 1012920 2% /dev/shm tmpfs 5120 4 5116 1% /run/lock tmpfs 1031332 0 1031332 0% /sys/fs/cgroup /dev/sda1 240972 145562 82969 64% /boot cgmfs 100 0 100 0% /run/cgmanager/fs tmpfs 206268 12 206256 1% /run/user/1000 As it works, it's not really important, but I'm curious to know why it thinks it's an unknown fstype when it clearly isn't. It's also a message which would obviously cause a newcomer to get worried, which is usually A Bad Thing... ///Peter -- xubuntu-users mailing list <a href="mailto:xubuntu-users@lists.ubuntu.com">xubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/xubuntu-users" rel="noreferrer" target="_blank">https://lists.ubuntu.com/mailman/listinfo/xubuntu-users</a> </blockquote></div>