Reformatting internal HD that will not mount
MBP will only boot to Recovery (cmd-R) . Using Disk Utility, Internal HD cannot be repaired and request I erase, reformat , reinstall. Drive will NOT mount Q: can I successfully reformat if the drive will not mount?
MacBook Pro, OS X Mavericks (10.9), Mid 2011,2.2 ghz,i7 quad,16g DDR3