Ok, I'm done.
Here's the first beta of the above version. It should backup and restore properly, and hopefully work on -any- N900.
http://robbiethe1st.afraid.org/Backu...0100923.tar.gz
Remember: backup your files before testing this; There may be a glitch or two in it. Once you know it works for you, it should be safe.
Also, even if it -does- screw up, the backups -are- known to be good and should be fine. Also, being tar archives, its possible to fix errors in it(say a missing or corrupt file), then restore it, which wasn't possible with the old version.


Anyway, instructions for install are as follows:
1. copy the above file to your MyDocs directory
2. Open up a terminal, sudo gainroot, then type: tar xvzf /home/user/MyDocs/backupmenu-20100919.tar.gz /
3. After it extracts, type:
cp /opt/maemo/usr/bin/gnu/tar /usr/share/backupmenu/
4. If you have the regular version of backupmenu installed, disable it:
mv /etc/bootmenu.d/BackupMenu.item /etc/bootmenu.d/BackupMenu.item.bak


To disable this new version:
mv /etc/bootmenu.d/BackupMenuLauncher.item /etc/bootmenu.d/BackupMenuLauncher.item.bak
And reinstate the old one:
mv /etc/bootmenu.d/BackupMenu.item.bak /etc/bootmenu.d/BackupMenu.item


Go ahead and try it; I want to know if it works or not!
Note that the only three features to be testing and working are FSCK mode, Backup mode and Restore mode. Everything else... who knows.