September 2017
Intermediate to advanced
98 pages
2h 14m
English
Even if you diligently followed all the instructions in this book, you might encounter problems while upgrading. I can’t anticipate every difficulty you may have (or provide solutions in every case), but here are some of the most likely issues and how to deal with them.
If the High Sierra installer icon has a slash through it, or if you try to run it and it quits immediately, the likely causes are: