Hi Jan_Niklas_Schulz,
is the problem still active?
I got two MBL up 'n running with smaller HDDs, both Seagate one 250GB, one 200GB. Installation was a breeze with Version 2 of debrick guide. But I ended up with a few tricky situations.
I listed the steps in this post:
related post: [SOLVED] No update possible
Have fun!