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I have tried all the obvious commands at boot without success, including Safe Mode. Then booted into Single-User mode. Ran “fsck -fy” command. Shows 9 line item warnings: “time stamp is invalid. Is greater than current time”. Rebooted and ran a hardware check which showed the battery needed to be replaced. Will replace the internal battery today, but not sure how to reset the date in Single-user mode. Any thoughts?

Stevo
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  • Hi @Stevo, I think it would be useful to know which system version is in use on your machine. – Johnmager Mar 26 '20 at 20:05
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    Try booting in Verbose Mode hold Cmd-V while booting. See if you can see what messages appear on the screen. Also, can you boot to Recovery? – Allan Mar 26 '20 at 20:27
  • Tried Cmd-V but scrolling is so fast can’t read if there’s any error messages. Then tries to reboot but just keeps rebooting. – Stevo Mar 26 '20 at 20:53
  • Running Mojave... – Stevo Mar 26 '20 at 20:54
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    Try recording with a camera so you can stop and read the messages – Allan Mar 27 '20 at 02:32
  • It might be worth to have a look at this post https://apple.stackexchange.com/questions/216730/this-copy-of-the-install-os-x-el-capitan-application-cant-be-verified-it-may-h/230012 . Although it does not meet your issue exactely, in this post several people evaluated date-time-issues related to installation problems. Perhaps you'll be able to find an idea on how to fix your problem. – Johnmager Mar 27 '20 at 11:28
  • “fsck -fy” checks out your startup partition. Your file system has gotten corrupted. You choices are to use a better file system recovery tool, reformat you dive & loose all you data or get an external drive. Install macos on the drive or restore from backup. Hold done the option key at poweron to pick your boot drive. – historystamp Mar 27 '20 at 18:29
  • could try setting a later date from the command line then booting from the command line. how to set the date: https://www.youtube.com/watch?v=NTdV7IWLQ3Y – historystamp Mar 27 '20 at 18:35

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