On Wed, Nov 28, 2012 at 09:13:09AM +0200, binary dreamer wrote: > hi. > � > i am looking to build debian for my system ALIX (pcengines) all flavors, > especially for the ones without vga. > i am looking to create two partitions. the first will have the system and > will be read only. writable it has to be only on demand, such remountrw to > enable it. > the second partition it needs to be read-write an empty space. > � > i neet� to create an embedded system with ALIX in a CF. Due to cf > limitations i have to extend its life by disabling the read-writes all the > time. > � > is there a simple guide to create such a system? > � > �
Have a look at unionfs (debian packages unionfs-fuse, mhddfs and aufs. All of these are different implementations of the same concept). These should allow you to have one filesystem as read-only, and another as read-write, so that reads are taken from the RO filesystem and writes are sent to the RW filesystem (copy-on-write). Not used them myself, but they should be documented well enough.
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