Hi, I'm working on a 2007 Macbook Pro. It came with a 120GB Fujitsu hard drive. Today I bought a 250GB Samsung SSD intending to replace the original drive. I installed the Samsung and attached the original hard drive via USB, and booted to the original hard drive now connected via USB. From there, using Disk Utility > Restore, I cloned the original volume to the newly installed SSD. That process completed with no errors, however I did note that the figures shown in Disk Utility for "Used Space", "Folders" and "Files" were close but not exact for both drives. I wasn't sure if that would be considered normal, I expected those numbers to be identical for both drives. I then restarted and attempted to boot to the internal SSD, and I got the prohibitory circle with a slash sign on the grey screen. A Safe Boot did the same. Running Disk Utility from the original drive, I ran a Verify on the new SSD which showed many folders with missing ACL information. I ran a Repair, rebooted to the new SSD, but same result. I also reset the PRAM with no change. Any suggestions? I'm out of ideas. I can always put the original drive back in and be back where I started.