I mess around schroot, chroot and mkschroot( https://github.com/KayEss/mkschroot ). Done something with blind but do not want to remove them with blind So!!! thank for link at the page's bottom. The instruction below are what I have done for remove unwanted chroot. 1. Check mounted sys by >> df -ah * you will see chroot mount path. 2. Goto /var/lib/schroot - remove your's chroot inside session's dir - do unmount proc sys dev/pts dev tmp in your's chroot from mount's dir * I'd use >> for f in proc sys dev/pts dev tmp;do sudo umount $f;done; - do unmount your's chroot thank for http://manpages.ubuntu.com/manpages/natty/man7/schroot-faq.7.html