Hi, I have a MacbookPro mid 09 and have some issues installing a new SSD. I had previously a SSD (and cloned the original HD) but it just stop working. Intel just sent me a new unit, which is working niceley (at least on a PC). I tried to make a clean install using a Lion DVD but could not see the drive in the disk utility. I then unplugged the drive and plugged it on a USB docking station. The drive could then be seen during installation. Before installing, I removed all partitions and created a new one (using the GUID partition format). The installation went smoothly but when I plugged the SSD into the laptop it could not boot. I have seen that some people first clone the original drive. Should I do that (I do not have the original drive anymore but have an old Macbook). As my laptop is still under warranty, do you think a genius could look at the problem (I am 100% sure the hard drive is working). Thanks for the help. W.