need suggestion about embedded FS plan

Russ Dill Russ.Dill at
Mon Feb 3 14:27:08 EST 2003

> In fact,there is only a little fs need to
> be 'SAVE',like /etc direcory,it take rooms less
> than %1 of all flash size.And the main parts
> /lib,/sbin,/bin...maybe never changed.
> So I have an idea,
> Put main parts of fs(/lib,/sbin....)on Cramfs
> at one of the flash bank.
> Put bootloader,kernel and need-save-fs(/etc) on
> the other flash bank with jffs2 fs.
> Is that possible?Sth ,I am not sure,is if no
> /etc in root fs,Maybe it can not boot up!!!

just make a /linuxrc, linuxrc is a shell script run by the kernel
(init=/linuxrc) that would do stuff like:

mount -t ramfs ramfs /var
mount -t ramfs ramfs /tmp
mkdir /var/run
mkdir /var/lock
mount -t jffs2 /dev/mtd2 /etc
exec /sbin/init

Russ Dill <Russ.Dill at>

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