Neither using a bootable thumb drive or internet recovery work.
My colleagues (mac people) are seriously suggesting the machine should be scrapped. I don't know much about macs but surely this can't be the case?
I've refomatted windows many times, there has got to be an equivalent for osx, surely?
In my case, same problem... but it was Google Drive causing the problem (for me, anyhow). Figures. Google... bah.
Followed the complete uninstall steps:
- Go to Google Drive menu bar icon, choose Preferences, and unlink Google Drive from my account.
- Quit Google Drive.
- Drag Google Drive from /Applications to trash.
- Remove Google Drive from Preferences > Users & Groups > Startup Items.
Wait a while and see what happens. This fixed the problem for me. (You can restart "just to be sure" but it didn't seem to be necessary in my case).