How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Pete Your Own Question

Pete
Pete, Computer Engineer
Category: Mac
Satisfied Customers: 15756
Experience:  Over 16 years of computer experience, CISCO certified
30970729
Type Your Mac Question Here...
Pete is online now
A new question is answered every 9 seconds

I wanted to install OS Sierra, it took four hours to

Customer Question

I wanted to install OS Sierra, it took four hours to download, now it says that the copy of the install file is damaged. What can I do?
JA: How much experience do you have with this particular machine?
Customer: I use it since three years, but I am no geek
JA: Have you installed any updates recently?
Customer: various: safari, iTunes, etc.
JA: What troubleshooting have you tried?
Customer: I am trying you :-)
JA: Anything else you want the Mac expert to know before I connect you?
Customer: not really
Submitted: 23 days ago.
Category: Mac
Expert:  Pete replied 23 days ago.

Hi, I'm Pete. Welcome to JustAnswer! I'm reviewing your question now, and will post back with your reply ASAP.

Expert:  Pete replied 23 days ago.

Try the following:

Step 1. Go to your applications folder.

Step 2. Find the installer for macOS Sierra.

Step 3. Right click on the installer and click "Show Package Contents".

Step 4. Click on folder named "Contents".

Step 5. Click on the folder named "SharedSupport".

Step 6. Delete the file named "InstallInfo.plist".

Step 7. Enter your administer password ***** confirm.

Step 8. Now open the installer.

--------------------
Your satisfaction is my priority;
Kindly take a moment to rate my service 5 stars at the top of your question page so I am rewarded for my time; tips appreciated :)
You can always reply back at any time if you need any further assistance at all.
Pete.
--------------------