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