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OSX USB Install Troubleshooting

OSX USB Install Troubleshooting 
April, 2020

Usually occurs when installing a new hard drive. And Unplugging the battery to put it in. 

Fix: The installer payload failed signature check During USB install of Mac OSX

In Utilities, open up the terminal 

type “date” press enter

I should show the system date, which is wrong, 

type in : date [today’s dat] 

in this format 

month(2 digits) day(2 digits) time( 4 digits- military time) year( 2 digits)

Here is our example for April 13th, 2020 at 4:12 pm

date 0413161220

04 - is the month
13 - is the day 
1612  - Is time in military time (4:12pm)
20 - is the year 

so type in: date 0413161220 
then ENTER

(With of course the current date and time represented after date)

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