In 10.12.2 Apple did something odd, it removed the ‘Time Remaining’ option from the battery indicator on Mac Books.Apparently this was becuase it wasn’t very accurate, but it’s still annoying nevertheless.Being stuck on an old version of mac OS is not something you can safely ignore.
I think the Yosemite update would have gone OK if I only had one windows partition.
There’s isn’t a way to add in back either, so you’re stuck with a simple percentage reading.
Before you can even sample the delights of Apple’s new desktop OS, you’ll have to make sure you have a compatible Mac.
Use Disk Utility and restore from Recover Mode to fix mac OS Sierra fail to boot error Method 4.
Use Terminal to fix mac OS won’t boot error after update Method 5.
The exact problem is that mac OS Sierra won’t boot after update.