Wang Yong wrote:
> .... i have a question: how to make root file system on the
> flash memory? by now, most embedded linux employ NFS as root file
> system.
The diskless NFS root file system is simply used for convenience and
to reduce application development time. You can put a root file
system on anything that will hold the bits.
> does anyone has any experience on it? is there a embedded linux
> has done it? any comment and suggestion are welcome. thank you.
Yes, there are many systems using a variety of solutions to Flash rom
root file systems. You have to consider your own application
requirements to choose what is appropriate for you. You can use
a compressed initrd stored in flash rom, which is uncompressed into
a ram disk. Another popular alternative is PCMCIA flash disks,
compact flash or Smart Media cards. You can put a file system on them,
partition them, and compress some or all of the data. Least favorite
on my list, but used by some people, is soldered on-board flash rom
parts. Wear leveling and dynamic allocation are complex algorithms,
and above a rather small size compact flash cards are more cost effective.
All of this is supported by standard Linux distributions, and the boot
code in the PPC port handles it well.
-- Dan
--
To unsubscribe from this list, send a message to [EMAIL PROTECTED]
with the command "unsubscribe linux-embedded" in the message body.
For more information, see <http://waste.org/mail/linux-embedded>.
