I just tried 'mntroot rw' then 'mount', which showed both '/' mounts as 'rw'. Then I did 'mntroot ro' (while in /var/tmp/root/ folder), and 'mount' showed '/dev/root' as 'ro' again (no error message). And I have CRP and pals on it too.
No idea what is holding yours open so it cannot remount, nor why it mounts that way on a reboot. How are you rebooting? Did you do a 'reboot' shell command, or something else?
And the command you extracted from 'mntroot' looks fishy, considering that '/' is a generic shared mountpoint now. That looks like trouble in the paradise to me (experience shows that only ONE of those mounts gets remounted, and without specifying which one, it is a fools gambit to do it the way they did). However, with that said, 'mntroot ro' worked for me (this time).
Last edited by geekmaster; 06-21-2016 at 11:58 AM.
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