[hanginwithdaddo]

I've noticed that "mntroot ro" (mount -o remount,ro /) fails on my kindle signature 12th generation device, which has been jailbroken using Winterbreak and has MR Installer, KUAL, and kterm installed. With just these things, I tried invoking "mount -o remount,ro /" and it fails with a "device busy" message. I believe that Amazon's code is causing something to leave / open for write, possibly before another mount is done on top of a directory within the default root partition, and I'm curious to find the root cause. I was tempted to add a shell script call to some of the /etc/upstart/*.conf files to try to track down the root cause.
Has anyone else noticed this? I did see an old, related thread, but it appeared that this was with a much older device. Thanks in advance for sharing any similar results or advice that you might have.