Recently I have experienced some problem with my Boox, fortunately solved with external help (Koudijs) and heavy use of the utelnetd (
http://users.openinkpot.org/~lunohod/onyx/ )
With the exploration through utelnetd I have discovered the directory /root/.cr3/cache/
This directory contains Megabytes of data! All the epub files opened with CoolReader are permanently stored here!
But I have an Onyx Boox 60 with an old firmware (1.5.1 - 20110927)
I hope who in the most recent version of the firmware, the last version of CoolReader does not store a copy of each epub opened.
I appeal to the owners of a M92/A62/I62 reader:
Someone can verify it?