Flash emonSD in Hard disk USB HDD, Possible?!

[Bill.Thomson]

This should get you started:

Moving the emonSD Linux partitions to a USB HDD

Various users have described moving the SD card root operating system image to an external HDD to better protect the SD card from corruption when subjected to uncontrolled power downs. Indeed, the requirement to maximise SD card life has spawned a great deal of effort on the part of the developers to create a low-write SD card image. This topic is intended to discuss the issues relating to moving away from the SD card to external USB HDDs, which are considered more robust to power failures