I can't format my new internal SSD to GUID Partition Scheme with Mac OS Extended(Journaled) but Master Boot works fine. When i try, it sticks at 'waiting for disks to reappear'. I have tried first erasing the drive itself which results in a similar error where it sticks at about half way through the progress bar and the time remaining just continues to increase. I have booted from a USB running Yosemite, Internet Recovery, USB installer drive and none have made a difference when it comes to formatting. The drive is currently Master Boot Record and is functioning (verified). My next step is to get a usb to sata connector and try to format the drive externally using a different mac. I have a feeling this won't fix the problem but I am desperate. I have access to a PC and a MAC if there is a solution using a PC to format it first for use internally as the main drive in my MBP Mid 2012. Any help is appreciated.
MBP Mid 2012
SSD is Samsung SSD 850 EVO
MacBook Pro (13-inch Mid 2012), Currently booting off USB flash
MBP Mid 2012
SSD is Samsung SSD 850 EVO
MacBook Pro (13-inch Mid 2012), Currently booting off USB flash