NFS root thru PPP

Kenneth Johansson kenneth.johansson at
Wed Aug 28 21:46:43 EST 2002

On Mon, 2002-08-26 at 17:22, Mészáros Lajos wrote:
> Have anybody experience with NFS root using PPP ?
> I have ported 2.4.18 kernel to a factory developed 850 board.
> It has two serial port but no ETH (the next version will have one).
> How can I use the 2nd serial as NFS root dev?

I looked into this a year and a half ago and got to the conclusion that
ppp can't operate without the pppd userspace program. So I did a small
RAM disk that starts ppp and then use chroot to get to the server root.

This works but running everything over a serial line is slow to start.
Once things has been cached it's works quite good but you really want to
avoid rebooting :)

Kenneth Johansson
Ericsson AB                       Tel: +46 8 404 71 83
Borgafjordsgatan 9                Fax: +46 8 404 72 72
164 80 Stockholm                  kenneth.johansson at

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