I have a very small version of Linux that boots from a CF. At boot time, the CF is mounted as read only, in order to prevent too many write cycles to it. As such, Linux actually runs from ramdisk.
However, there are times I may want to add new files to this system. WIthout actually writing these files to the CF, these changes will obviously be lost during a reboot.
Of course, the problem is not being able to unmount the cf (there is one partition at /) in order to remount it as read-write.
Is there a way to do this?