Hi! I want to install Windows on my rMBP, with its 256gb SSD, installing bootcamp on internal is a non option. So i ordered a 4TB WD Thunderbolt Duo, since its a TB to SATA controller. i started easy, going trough bootcamp assistant, making that do all the "hard work". The install to the TB drive went fine, it even booted up no problem. So its possible. Just, i rather have the 4tb raid0 config for Mac OS. (as far as i know, partitiong a raid0, is not possible?) To solve this, i shucked an "old" SATA drive in there, partitioned it to MBR, EFI sees it at boot. Starts the installer, but when i get to the select install disk in the windows installer, it wont install on that drive. I've tried to format it, delete and create new... neither worked. I searched the error code on google (i'm at work, so i cant supply that code atm, might be able to later if its necessary) And it seemed to be a somewhat known error. Some solved it by removing all the other harddrives. on the mac, with pentalobe screws, thats not a simple task. I'm going to take a leap of faith here... i'm not the only one who would like this to work? no clutter with partitioning your system drive, run windows off external have been my dream as since 09, when i got my first mbp I might try the following: * Try to install W8 Consumer Preview * Time machine back up my system drive. do the bootcamp way, clone the drive, and copy it to the external with norton ghost Does anyone have a sound solotion?