Zynthian Discourse

Run from read only SD-card / run headless

Baggypants February 14, 2022, 8:47pm 2

Someone had a go with it. Search found it pretty quick.

Using overlayFS for read-only SD cards Development

In order to make Zynthian more “Live Friendly” and tolerant of unexpected power down, I am looking into what is required to bring overlayFS into Zynthian. OverlayFS provides a shadow filesystem so that the root filesystem can be mounted as read-only. When a reboot or normal shutdown is performed, a sync operation occurs and the root file system is mounted as read-write, and the modified files are copied to the SD card and then the filesystem is returned to read-only status before final shutdown…

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