Mid 2012 mbp samsung ssd issue on OSX Yosemite 10.10.3


i have read problem both 256gb/500gb samsung ssd drive's being recognized on mbp, disk utility wont recognize either when start internet recovery
if use external drive , put samsung's in work fine , can boot external drives
samsung model model number mz-7td500 500gb model , works in windows externally on macbook, switch folder , question mark issue
have read on , usual issue replace hdd cable, have twice (same seller replaced 1st 1)both times when doing recovery on internet same thing, shows optical drive , file downloaded apples server
got trim 3.3 , installed , switched on there comes error message unable verify or other
256gb samsung worked in old 2009 mbp yosemite 10.10.3 , recognized straight away, after selling , removing ssd drive cleared drive , installed ssd 2012 cant work out whats wrong

on optical side detects , works fine, mod have done on mbp 2012 upgrade ram 16gb of crucial?
 

trim says patch active unable detect trim status. make sure trim enabled check system information
 


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