This article describes how to expand the Ewon Flexy memory space by using an SD card. The Ewon officially supports SD Cards only up to 1 GB, but unofficially and practically, much larger cards can be used. In fact, the Ewon will support an SD card of 128 GB if it is properly formatted.
Ewon Flexy series
SD card up to 128 GB (Industrial grade SD cards are highly recommended)
Linux computer or Windows PC with EaseUs Partition Master or comparable software
The /usr memory space of the Ewon Flexy can be expanded by using an SD card. This will allow you to store more and larger files.
You must format the card using MBR (not GPT). Select the EXT3 filesystem and the 4KB cluster size:
Once the card is formatted, it can be inserted it into the Flexy (must be powered off). When the Flexy is powered on, the SD Card will be mounted under /usr/sdext.
For more information, please see AUG 69 - EUM Card - Extend eWON User directory memory