Hello !
I m Using Mac Book Pro
Retina, 15-inch, Late 2013
Processor 2 GHz Intel Core i7
Memory 8 GB 1600 MHz DDR3
Graphics Intel Iris Pro 1536 MB
Software OS X 10.9.5 (13F1507)
i m facing too many problems with my OS X when i download any thing i got error you dont have System Memory and safari is stuck and ask me to
force quit if i update my OSX to EI captain then all my available data is lost or it remains i tried it but my system is hanged i have almost 200 GB free .