Can’t install Mojave. Need a new disk?

Tech Support
1
  • I get a can’t install error - Run First Aid…
  • First Aid doesn’t work
  • Booted into recovery mode and first aid doesn’t work
  • Boot into single user and try a couple of fsck-fy’s And no go.
  • I get a file system check exit code 8
  • I made a bootable USB with same outcome.
  • High Sierra boots up no problem
  • I am double backed up.
  • Will an erase in recovery mode and clean install solve this, or is my SSD trying to die on me ?

Yelp!

2

I needed to do a clean install from a USB bootable updater and the APFS re-wrote correctly.
All is well. Now to wrestle with all the update bugs that the app developers need to squish

3

If its an older Mac did you check its compatible with the system requirements for macOS 10.14 Mojave?

4

Nah. It is a 2017 MBP 13” Touch Bar.