Finally Teo found a well hidden bug which prevent **Calamares** installing Manjaro correctly in some occations when **swap** is present:

[08.06.2016 17:44:51] Teo Mrnjavac: hello
[08.06.2016 17:45:30] Teo Mrnjavac: I just managed to find a very tricky bug which came up from a combination of systemd and manjaro-tools, and inconsistently but way too often results in Calamares install failure
[08.06.2016 17:45:51] Teo Mrnjavac: basically, manjaro-tools writes a swap line into /etc/fstab on the live system
[08.06.2016 17:46:25] Teo Mrnjavac: because of this, systemd tries to be way fucking clever and keeps remounting whatever swap it finds in fstab and detects as fs type 82 even when you manually swapoff
[08.06.2016 17:46:48] Teo Mrnjavac: Cala does swapoff, systemd mounts it back on, Cala does swapoff, systemd mounts it back on, und so weiter
[08.06.2016 17:47:44] Teo Mrnjavac: I don't blame manjaro tools, it makes sense to use swap if you can, but systemd keeps remounting it and there's no easy way to make it stop
[08.06.2016 17:48:33] Teo Mrnjavac: we could remove that systemd unit, but IMO it's much easier to go into util-live.sh and yank out line 349