Just got a new Inspiron 530 with Vista.  Added a new WD 150gb raptor (sata), went into disk management and installed and formatted it.  Drive shows up in disk management, but not in My Computer.   Ran Acronis Clone and cloned 320gb drive to 150gb raptor.  Operation says it was successful.  Unplugged 320gb drive, and attempted to boot (yes went to f12 and selected raptor as boot drive).  Get message MBR not found, select boot drive).  With original drive still unplugged, took Vista CD, and booted from CD.  Tried to do a repair on Vista install.  It acts like it can't find any HD's.   I'm guessing it has something to do with not being able to see the HD in MyComputer.  

I have installed numerous HD's in the past (on XP) without any problems.  What am I over looking.....