mbanayosi

Q: I tried installing mavericks and i always get "This copy of the Install OS X Mavericks application can't be verified. It may have been corrupted or tampered with during downloading."

I tried installing mavericks and i always get "This copy of the Install OS X Mavericks application can't be verified. It may have been corrupted or tampered with during downloading."

 

I redownloaded it 3 times and always get the same error

 

I have a 13-inch, Mid 2012 macbook pro with OS X 10.8.5 running on it.

 

Thanks.

MacBook Pro

Posted on Oct 23, 2013 3:52 PM

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Q: I tried installing mavericks and i always get "This copy of the Install OS X Mavericks application can't be verified. It may have ... more

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  • by mbanayosi,

    mbanayosi mbanayosi Oct 25, 2013 8:53 AM in response to maximomark
    Level 1 (0 points)
    Oct 25, 2013 8:53 AM in response to maximomark

    By "Attempt no. 6 was succesful" you mean 6 attempts of downloading ? or 6 attempts of installing ?

  • by InfraredAD,

    InfraredAD InfraredAD Oct 25, 2013 10:50 AM in response to mbanayosi
    Level 1 (45 points)
    Oct 25, 2013 10:50 AM in response to mbanayosi

    I ran into this problem on 3 different Macs at work, all were running 10.9, and I think I've got it solved as of this morning. On each Mac, I downloaded Mavericks from the App Store and created bootable installation media using the "createinstallmedia" command, instructions for which are here:

     

    1. http://support.apple.com/kb/HT5856
    2. http://www.macworld.com/article/2056561/how-to-make-a-bootable-mavericks-install -drive.html

     

    Using the created bootable install media, on a flash drive, I received the ".. can't be verified..." error on any other Mac I attempted to install Mavericks on. I redownloaded Mavericks from the App Store multiple times; sometimes I left the already downloaded copy in place, other times I deleted it before downloading a new copy. Nothing worked.

     

    One workaround was to install 10.8.x on another MacBook Pro, then download Mavericks from the App Store, create the install media via the Mac running 10.8, and that allowed me to use that media on any other Mac successfully. A colleague and I even upgraded the Mac that was running 10.8 to 10.9. We then tried creating bootable install media again, and that continued to work on other Macs.

     

    Another workaround that reaffirmed my faith that there was nothing wrong with my existing Mavericks install on the 3 Macs I first mentioned was to create another admin-level user account.

     

    While logged into the new account on one of the three Macs that resulted in the "..verified.." error when using bootable install media created from them before, I was able to create bootable install media and then use that on another Mac.

     

    Thus, long story short, at least in my case the error seems to be rooted in some problem with my existing user accounts on all 3 Macs. All 3 Macs were built with Mavericks via a clean install, using bootable install media that was patched together by restoring the contents of the invisible BaseSystem.dmg disk image to a flash drive. After installing, personal data was restored using the Migration Assistant at first boot.

     

    So my suggestion for anyone here would be to create a new admin-level user account on their Mac, and try upgrading in place. Likewise, using a new account appears to allow for viable install media to be created.

  • by indiekiduk2,

    indiekiduk2 indiekiduk2 Oct 25, 2013 11:05 AM in response to InfraredAD
    Level 1 (10 points)
    Oct 25, 2013 11:05 AM in response to InfraredAD

    The problem I had was not with the download but with the command to create the bootable image. It kept giving a corrupt image. Check the MD5 of the BaseSystem.dmg in the Install Mavericks app and the one on the USB drive, if they don't match keep running the command until you get it to match. It took me 3 tries to get it to copy correctly. There must be bugs in how it copies.

  • by Old Toad,Helpful

    Old Toad Old Toad Oct 25, 2013 11:11 AM in response to indiekiduk2
    Level 10 (140,898 points)
    Photos for Mac
    Oct 25, 2013 11:11 AM in response to indiekiduk2

    For what it's worth for those with their Mac running a language other than US English try this solution:

    Change the language of OS in preferences for any other, reboot your mac, open mac app store and updates would show up. Somehow worked for me and my friends Then you can go back to your orginal language.

  • by peto01,

    peto01 peto01 Oct 25, 2013 12:58 PM in response to mbanayosi
    Level 1 (0 points)
    Oct 25, 2013 12:58 PM in response to mbanayosi

    Ok, now the question is how to fix it when I formatted the hdd first and then ran the install from the usb.

  • by vinosasi,

    vinosasi vinosasi Oct 25, 2013 7:49 PM in response to mbanayosi
    Level 1 (0 points)
    Oct 25, 2013 7:49 PM in response to mbanayosi

    Yeah 6 attempts of downloading and installing. Now I can't download the so anymore omg what's going on?

  • by Jochen Bonne,

    Jochen Bonne Jochen Bonne Oct 26, 2013 1:49 AM in response to peto01
    Level 1 (15 points)
    Oct 26, 2013 1:49 AM in response to peto01

    Seems that for most users the diskutility (in the installer itself) repair disk thing does the trick ... unfortunately for me it did not, but here is how I got around:

    - plugged in an external harddrive that could be formatted.

    - in the installer selected the external harddrive as the disk on which the upgrade needed to be upgraded.

    - once installation completed Mavericks will run fine from the external drive and the so called corrupted internal drive is mounted and visible...

    - import users with the migration assistant: all date is recovered!

    - reboot with option key to select another boot volume

    - select OSX installation volume

    - use the diskutility to format the internal drive

    - install Maverickx on the internal drive

    - import the users again from the external drive with the migration assistant.

  • by maximomark,

    maximomark maximomark Oct 26, 2013 1:52 AM in response to mbanayosi
    Level 1 (5 points)
    Oct 26, 2013 1:52 AM in response to mbanayosi

    6 attempts of downloading + 2 attempts of installing ( 4 downloading attempts failed).

  • by vinosasi,

    vinosasi vinosasi Oct 26, 2013 4:57 AM in response to Jochen Bonne
    Level 1 (0 points)
    Oct 26, 2013 4:57 AM in response to Jochen Bonne

    And I'm nose bleeds haha. Too technical for me I'm not a tech person. Can apple make a solution for this?

  • by abgraham,

    abgraham abgraham Oct 26, 2013 2:44 PM in response to maximomark
    Level 1 (0 points)
    Oct 26, 2013 2:44 PM in response to maximomark

    Did you restart your computer or anything between trying to install it again or did you just try installing it one after another?

  • by TXJACK,

    TXJACK TXJACK Oct 26, 2013 3:30 PM in response to mbanayosi
    Level 1 (0 points)
    Oct 26, 2013 3:30 PM in response to mbanayosi

    All I can say is it starting to remind me of PC issues !!!!!   Apple is losing the edge!

  • by abgraham,

    abgraham abgraham Oct 26, 2013 3:32 PM in response to TXJACK
    Level 1 (0 points)
    Oct 26, 2013 3:32 PM in response to TXJACK

    Thanks for adding something valuable to the conversation.

  • by Bill_04,Solvedanswer

    Bill_04 Bill_04 Oct 26, 2013 6:31 PM in response to abgraham
    Level 1 (10 points)
    Oct 26, 2013 6:31 PM in response to abgraham

    I changed the date as outlined here:

     

    http://blog.mconserv.net/2013/10/install-os-x-mavericks-application-cant.html

     

    This worked for me!

  • by abgraham,

    abgraham abgraham Oct 26, 2013 8:01 PM in response to Bill_04
    Level 1 (0 points)
    Oct 26, 2013 8:01 PM in response to Bill_04

    Thank you so much Bill! You saved my computer! I did exactly what the post said and it worked. I was just going to ignore your post because it seemed so stupid that it could just be a date issue especially after all the other more complicated things I have tried. You are a lifesaver.

  • by Pengapine,

    Pengapine Pengapine Oct 26, 2013 8:18 PM in response to abgraham
    Level 1 (0 points)
    Oct 26, 2013 8:18 PM in response to abgraham

    Could someone put a detailed explaination of how to fix the date issue via Terminal?

     

    Much appreciated!

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