QUOTE(mandrake001 @ Jun 7 2006, 08:21 PM)
Can i use the drive in a core system when formating when atached ? or can i unlock the drive on my pc and then atach it to a new core system ?
Or do i need to buy an other freaking premium pack ?
Yes you can move the populated HDD to the CORE console. X360 HDDs arn't locked like XBOX1 HDDs. But I believe you'll need to be logged into XBL for the any XBL Arcade or preimum content to work - See here
for more details.