On 18:09:37 Mar 27, Uwe Dippel wrote:

quoted text
> I don't know if this makes a lot of sense or any, but I was thinking that

> flash memory doesn't like too many writes. So I was thinking of creating

> one or two RAMdisks, for all those temporary reads and writes that I need,

> and only store the final result on the flash.

> The whole system will run from flash, true, but the directory with plenty

> of writes and processing should run in RAM. So I'd like to create a drive

> in RAM and then mount this drive as for the busy directory.

>

> Does this make sense? If yes, how to do it?

> 

You need memory file systems for that.
It is very easy under OpenBSD.
man mount_mfs
You have examples in Andreas Bihlmaier's liveCD writeup here.
http://openbsd-wiki.org/index.php?title=LiveCD
You typically have to create a tar zip of the mount file system and

untar it in the RAM disk and you are set.
It is a good idea to mount /tmp and /var on RAM disks.
-Girish