in rc.init copy log from previous boot to place of safety

modules/s6/scripts/rc.init

@@ -22,6 +22,11 @@ mount -t tmpfs none /tmp
 mkdir /dev/pts
 mount -t devpts none /dev/pts
 
+if test -c /dev/pmsg0 ; then
+    mount -t pstore none /sys/fs/pstore
+    (cat /sys/fs/pstore/* && rm  /sys/fs/pstore/*) > /run/log/previous-boot
+fi
+
 mkdir -m 0751 -p /run/services/outputs
 chgrp system /run/services/outputs