thanks for the quick reply , I tryd your experimental howto but i could not get it work
rootfs on / type rootfs (rw) /dev/root on /rom type squashfs (ro,relatime) proc on /proc type proc (rw,noatime) sysfs on /sys type sysfs (rw,noatime) tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noatime) /dev/sda1 on /overlay type ext4 (rw,relatime,data=ordered) <----- this line overlayfs:/overlay on / type overlayfs (rw,noatime,lowerdir=/,upperdir=/overlay) <----- this line tmpfs on /dev type tmpfs (rw,relatime,size=512k,mode=755) devpts on /dev/pts type devpts (rw,relatime,mode=600) debugfs on /sys/kernel/debug type debugfs (rw,noatime)it´s missing that line
/dev/sda1 on /overlay type ext4 (rw,relatime,data=ordered) <----- this line