Cannot boot MacOS after booting Windows on an external drive.

I recently installed Windows on an external SSD using my MB Pro. I can perfectly boot into Windows, but every time I try to boot into MacOS it doesn’t work.

I type in my password, the bar loads about 1/15th of the way and then freezes just before the screen goes black. I tried booting into MacOS directly from Windows, from the holding the “option” key and choosing MacintoshHD, and from the recovery screen.

I kinda want to be able to switch between these two OS easily without losing all by data, so any suggestions?

Your question is more of a support one, so I'd suggest you ask it over at the Apple Support Forums. Thanks.

Cannot boot MacOS after booting Windows on an external drive.
 
 
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