Bootcamp partition missing on startup
I have a Mid 2012 Macbook Pro, and I can't seem to be able to boot to my Windows partition. I have been running Windows 10 (updated from Windows 7 Pro) on a 1TB HDD. This issue has only just occured, after attemping to install Bootcamp on another SSD installed in my optical bay. Full list of events:
- Replaced my optical drive with a SSD using an MSE Optibay adapter
- Used Winclone to create an image of my current bootcamp partition
- Downloaded a Windows 10 ISO image on my bootcamp partition
- Used Boot Camp Assistant to create an install disk with drivers on an empty flash drive
- From Boot Camp Assistant, attempted to install Windows 10 on the new SSD
- The install completed, but upon restart, booted to blank black screen
- Attempted rebooting, and booted to black screen with flashing underscore
- Booted into Mac and figured something wasn't right, so reformatted the new SSD to FAT
- Attempted to boot into old Boot camp partition, only to boot to blank screen
- Disconnected other SSD, as suspected it was causing issues (didn't do anything)
- Attempted to restore backed up winclone image to old partition
- Winclone restore resulted in the creation of an EFI drive, along with what looks like my old BOOTCAMP drive.
- Attempted to reboot to BOOTCAMP from startup disk, brings me to black screen with flashing underscore.
This brings me to now. I have a feeling I messed up the partition table. When holding option while booting, I am only offered Macintosh HD, EFI Boot, and Recovery-10.10. Any idea what I can do to successfully boot to windows?
MacBook Pro (13-inch Mid 2012), OS X Yosemite (10.10.2)