A few kernel options are of specific interest to those creating an embedded FreeBSD system.
All embedded FreeBSD systems that use flash memory as system
disk will be interested in memory disks and memory filesystems.
Because of the limited number of writes that can be done to
flash memory, the disk and the filesystems on the disk will most
likely be mounted read-only. In this environment, filesystems
such as /tmp
and /var
are mounted as memory filesystems to allow the system to create
logs and update counters and temporary files. Memory
filesystems are a critical component to a successful solid state
FreeBSD implementation.
You should make sure the following lines exist in your kernel configuration file:
This, and other documents, can be downloaded from http://ftp.FreeBSD.org/pub/FreeBSD/doc/
For questions about FreeBSD, read the
documentation before
contacting <questions@FreeBSD.org>.
For questions about this documentation, e-mail <doc@FreeBSD.org>.