OK, it is a good sign. (But it seems that "mr0" version doesn't have bug 10994).

Now, please do

./M32GBboot.sh

copy an attached files to /bootmenu.sh and /sbin/preinit :

cp bootmenu.sh.txt /bootmenu.sh
cp preinit.txt /sbin/preinit

and reboot with open KBD.

Your N900 would NOT BOOT with this files but you should see a console output which would freeze for 10 secs at message

**************** CHROOT RUN LEVEL=XXX

After that freeze a watchdog will enforce a new reboot. Please immediately close KBD, go to a regular boot and run ./M32GBrm.sh to restore both files. You should do it because there is a potentially a boot loop which can be interrupted by closing KBD. Just remember that N900 has a failed reboot counter and if it exceed 15 or 20 failed reboots in line some Nokia software will enforce a permanent shutdown and the only battery disconnection + rootFS + kernel reflash can help in this case.

And I am interesting in numeric value in place of XXX.