Your system by default uses HFS+ file system you Need to limit the OS to Sierra 10.12.x otherwise you can create OS & Firmware confusion!
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Your system by default uses HFS+ file system you need to limit the OS to Sierra 10.12.x otherwise you can create OS & Firmware confusion!
Yes, this system can support APFS when you upgrade from Sierra to High Sierra but I’ll warn you HS was an experiment! Apple updated the file system and OS with better versions of APFS but you system really can’t support the newer OS’s.
So what I suspect here is this disk was setup from another system running a newer macOS release (APFS) which is messing you up. Your MacBook’s firmware was not upgraded with the need version so it won’t work properly.
Sounds like you have a OS mis-match issue here!
Your system by default uses HFS+ file system you Need to limit the OS to Sierra 10.12.x otherwise you can create OS & Firmware confusion!
Yes, this system can support APFS when you upgrade from Sierra to High Sierra but I’ll warn you HS was an experiment! Apple updated the file system and OS with better versions of APFS but you system really can’t support the newer OS’s.
So what I suspect here is this disk was setup from another system running a newer macOS release (APFS) which is messing you up. Your MacBook’s firmware was not upgraded with the need version so it won’t work properly.