Original post by: j2918370 ,
I am adding a 2nd SSD to my 2011 Mini (using the ifixit kit) and started with a Samsung 830. Samsung had released a firmware update to fix a BSOD problem with Windows in January so I updated my drive before installing it. The drive does not work with the Mini. Sometimes it didn't recognize the drive and couldn't partition it. I swapped the 830 with a Samsung 810 from an older Mini running Snow Leopard. Both drives work fine in their respective machines now so I suspect its a problem between the firmware and Lion. The machine with the 830 will probably never move beyond Snow Leopard since I need Rosetta for some old PPC applications .