Had problems with lxterminal that I could not work out what was happening but error occurred after running build.sh Before running ./build.sh devpts in mount looks like this devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000) Once build script starts to run devpts looks like this devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,mode=600,ptmxmode=000) Am assuming that the mount line in mkarchiso is the problem, ould be nice to find a way to restore defaults?