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mac os reinstall didn't work

I get the following message when trying to reinstall Mac OS:


OS X could not be installed on your computer


No packages were eligible for install. Contact the software manufacturer for assitance.

Quit the installer to restart your computer and try again.

Restart

MacBook

Posted on Feb 21, 2021 5:02 PM

Reply
Question marked as Top-ranking reply

Posted on Feb 22, 2021 4:10 AM

The certificates for several of Apples OS's expired in October 2019, Apple have been very poor at getting these updated on 

their Recovery Servers with valid certificates. 


This may be the problem you are experiencing. 


Try this workaround, we are going to set the time and date on your mac to a date previous to the expiry date of the certificates.


Connect your mac to your router via cable, not WiFi


Boot to your Recovery HD, click on Utilities in the menubar select Terminal.


Make sure WiFi is switched off, it can reset the date back to today.


Enter a new date, for example or just copy and paste


sudo date -u 011421002017


press Return

enter your password

press Return


If Terminal returns an error saying sudo : command not found, then try again without sudo.


just enter 


date -u 011421002017


press Return


You won't be prompted for a Password if you did not need to use sudo


Once the date has changed you can quit Terminal.


Now try downloading the OS.


Click on Install OS X, press Continue.


If this works then when the OS is installed and booted up you can Open System Preferences> Date & Time

and reset the time back to today.

2 replies
Question marked as Top-ranking reply

Feb 22, 2021 4:10 AM in response to Mememememememememememememe

The certificates for several of Apples OS's expired in October 2019, Apple have been very poor at getting these updated on 

their Recovery Servers with valid certificates. 


This may be the problem you are experiencing. 


Try this workaround, we are going to set the time and date on your mac to a date previous to the expiry date of the certificates.


Connect your mac to your router via cable, not WiFi


Boot to your Recovery HD, click on Utilities in the menubar select Terminal.


Make sure WiFi is switched off, it can reset the date back to today.


Enter a new date, for example or just copy and paste


sudo date -u 011421002017


press Return

enter your password

press Return


If Terminal returns an error saying sudo : command not found, then try again without sudo.


just enter 


date -u 011421002017


press Return


You won't be prompted for a Password if you did not need to use sudo


Once the date has changed you can quit Terminal.


Now try downloading the OS.


Click on Install OS X, press Continue.


If this works then when the OS is installed and booted up you can Open System Preferences> Date & Time

and reset the time back to today.

mac os reinstall didn't work

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