I have a MacBook Pro 2013 with two hard drives. One of them is the original MacBook’s 500 GB HDD drive and I have extra SSD drive that I installed instead off cd rom. Mac OS is installed on both of drives but I use SSD as my system drive.
Today I started to install the new macOS High Sierra on the SSD system drive and after the first reboot the Mac showed a progress bar that wasn’t moving for 15 minutes. So I made reset (holding power button). Now my MBP restarted from HDD and I can’t find my SSD in Disk Utility. It is hard to say how I am worried now about data stored on SSD.
What should I do to finally boot from my SSD safely without loosing data?
Upated: Disk Utility shows the SSD drive but it doesn’t show any logic drives here:
Also I found some restoring software that shows my drive structure: