Macbook won't boot from internal ssd drive, booting from usb.
I was having issues in booting my macbook pro (mid 2012), It was booting sometimes, Sometimes it won't boot and empty folder with question mark in it appears.
So i bought a lexar ns100 512gb SSD. SSD was not formating or booting when installed in mbp internally, But when i use it through USB dock it is booting and formating.
Does anyone know how can i use ssd internally installed