Hello,
in that case i would like to inform you that you first need to format the new ssd drive in order to be detected by the system. you can format the drive externally or internally with the following steps:
http://kb.sandisk.com/app/answers/detail/a_id/8169/kw/partition
http://kb.sandisk.com/app/answers/detail/a_id/8170/kw/partition
