Rich-

I've exchanged a few e-mails with the author of mmc-unionfs, but that was about a month ago. According to his site, the port to 2006 is on hold because the shutdown scripts use /home/user as their home directory.

Bummer. I hope this gets resolved soon.

Until then... if you're the daring sort... I've attached my port of mmc-unionfs. The installer will simply install the kernel module and software for mmc-unionfs, so you'll have to run "setup" and "enable-boot" (as per the above documentation) to actually setup and activate a union.

This package will install as "mmc-unionfs-hack" and should be un-installed and replaced with the "real" mmc-unionfs package as soon as it's released.

I don't guarantee it works, but I've been using it for weeks now without problems (well, unless I crash the 770 - then I need to pull the MMC and run e2fsck on it to make sure the filesystem is ok).

Oh yeah... this is important - You'll need to modify a pair of scripts in /etc/init.d (as root, of course):

Specifically, edit "minireboot" and "minishutdown".
you'll need to manually edit the line:

umount -r /media/mmc1 /mnt/initfs /

To be:

umount -r /media/mmc1 /media/mmc2 /mnt/initfs /

This will make sure the union will be unmounted at shutdown and reboot. If you don't, you'll end up with a corrupt ext2 filesystem.

Just for practice, I'm going to modify the installer to automatically modify the minireboot and minishutdown scripts just to make things easier; I'll update this post when the time comes FWIW.

Hope this is useful,

Brad.