Comment # 5 on bug 1043238 from Mindaugas Baranauskas

Created attachment 728493 [details]
y2logs from openSUSE-Leap-42.2-livecd-gnome.x86_64-1.0.0-Build56.1.iso swap
umounted before starting yast2-live-installer

I umounted swap (/dev/sda1) before starting yast2-live-installer,
swap remained not mounted also rigthh before doing real changes in hard-disk,
but yast2-live-installer still failed at removing /dev/sda1...
and at moment of DISK_REMOVE_PARTITION_PARTED_FAILED error, 
I found it is mounted again...