I get this issue.. I can't seem to log in. It was working but it pushed an update for El Capitan (which was already the updated OS but it was stuck on some other rec'd update) so I accepted. But now I cannot log in.
This error (in photo) shows up. Any suggestions?
MacBook Air 13″, OS X 10.11
How to reinstall macOS - Apple Support explains:
You can do that as long as you are willing to sacrifice all the information on that Mac. If you need to retain its contents, then you will need to start your Mac from another device, such as an external hard disk drive or flash drive. Might that be an option?
Change your Mac startup disk - Apple Support: Shut down the Mac, connect that device, then press and hold an option key while starting the Mac to choose it as its temporary startup disk.
If you have or can borrow another Mac, you might be able to start yours in Target Disk Mode: Transfer files between two Mac computers using target disk mode - Apple Support.
Either option may give you the opportunity to back up that Mac's files prior to erasing it.
How to reinstall macOS - Apple Support explains:
You can do that as long as you are willing to sacrifice all the information on that Mac. If you need to retain its contents, then you will need to start your Mac from another device, such as an external hard disk drive or flash drive. Might that be an option?
Change your Mac startup disk - Apple Support: Shut down the Mac, connect that device, then press and hold an option key while starting the Mac to choose it as its temporary startup disk.
If you have or can borrow another Mac, you might be able to start yours in Target Disk Mode: Transfer files between two Mac computers using target disk mode - Apple Support.
Either option may give you the opportunity to back up that Mac's files prior to erasing it.
Apparently the El Cap update didn't go well. Your options are to restore that Mac's content from a TM backup created prior to the update, or to reinstall macOS:
Thanks John! I unfortunately don't have a TM to revert to. I tried reinstalling the OS multiple times but no luck... And now it says I don't have enough space to try and install the version before the El Capitan. Any other suggestions? :(
2013 MacBook air - el Capitan OS
