but my harddisk is still unlocked.
so it won't boot even though i do that, right?
i unlocked it using configmagic after i got the unleashx menu.
then i got this "no space left error" that almost everyone got.
i backuped everything with the ndure C: backupscript.
then i unlocked my drive with configmagic.
then i booted xboxhdm and formatted the c: drive.
now i don't know what to do...

You had the "no space left" error probably from your Shadow C (which fills C up preventing it from being updated).
If the HDD is currently unlocked and you don't have the eeprom your screwed for using XBOXHDM and can only fix it with an eeprom reader or chip at that point. You won't be able to hotswap the drive unless it is locked on boot.
And BTW no bumping here. Bump your thread in less than a 24 hour period again and you'll receive a warning. Be patient and people will help if they can.