Trying "How to create a bootable installer for macOS" El Capitan ends up terminal saying: Error erasing disk error number (-69888, 0)
A error occurred erasing the disk. Followed the instructions exactly! 16 G Kingston USB stick.
Mac Pro
I figured it out and thought it might help others with error number (-69888, 0).
Although I renamed the new 16 GB USB stick MyVolume per instructions, it had a prior installation of it that never worked!
Because of that the disk could not be dismounted to be erased.
Solution:
I used Disk Utility to erase the stick and reformat to Mac OS Extended and named MyVolume.
then:
Following the instructions at https://support.apple.com/en-us/HT201372 again all worked perfect!
I figured it out and thought it might help others with error number (-69888, 0).
Although I renamed the new 16 GB USB stick MyVolume per instructions, it had a prior installation of it that never worked!
Because of that the disk could not be dismounted to be erased.
Solution:
I used Disk Utility to erase the stick and reformat to Mac OS Extended and named MyVolume.
then:
Following the instructions at https://support.apple.com/en-us/HT201372 again all worked perfect!
Why do I get an error erasing the disk has occurred?
