Dennis H

Q: bootable copy of OS X El Capitan

I Followed the post:


Create a bootable installer for OS X


 

https://support.apple.com/en-us/HT201372

 

I Have tried over and over but keep getting:

 

"OS X could not be installed on your computer"


AFter Googling it I found out that this is an apparent issue, can you help?


DEnnis

MacBook Pro, Mac OS X (10.5.2)

Posted on Feb 26, 2016 3:28 PM

Close

Q: bootable copy of OS X El Capitan

  • All replies
  • Helpful answers

  • by Csound1,

    Csound1 Csound1 Feb 26, 2016 3:30 PM in response to Dennis H
    Level 9 (51,241 points)
    Desktops
    Feb 26, 2016 3:30 PM in response to Dennis H

    Tell us what you did, what you expected to happen, and what did happen.

     

    Tell us the age and model of your Mac as well.

  • by Dennis H,

    Dennis H Dennis H Feb 26, 2016 3:54 PM in response to Csound1
    Level 1 (0 points)
    Feb 26, 2016 3:54 PM in response to Csound1

    RE: "Tell us what you did, what you expected to happen, and what did happen."

     

    I followed the post: "Create a bootable installer for OS X" (https://support.apple.com/en-us/HT201372)

     

    I followed the steps in the above post (I have done this many times with other OS X's) at least 10 times.

     

    I keep getting the error message after agreeing to the install, "OS X could not be installed on your computer"

     

    I GOOGLED this and found out its a know issue.

     

    I've tried two different 500GB external drives and two different 32GB jump drives, all with the same results.

     

    I've tried the steps in the article, "How to make a bootable OS X 10.11 El Capitan installer drive"  from MacWorld with the same results.

     

    I've tried several different downloads of the installer.

  • by Csound1,

    Csound1 Csound1 Feb 26, 2016 4:02 PM in response to Dennis H
    Level 9 (51,241 points)
    Desktops
    Feb 26, 2016 4:02 PM in response to Dennis H

    I still don't know how old your Mac is (or which model)

     

    Lets start with those please

  • by Dennis H,

    Dennis H Dennis H Feb 26, 2016 4:05 PM in response to Csound1
    Level 1 (0 points)
    Feb 26, 2016 4:05 PM in response to Csound1

    Sorry, I'm a little shot with this today.

     

    Hardware Overview:

      Model Name: MacBook Pro

      Model Identifier: MacBookPro10,1

      Processor Name: Intel Core i7

      Processor Speed: 2.8 GHz

      Number of Processors: 1

      Total Number of Cores: 4

      L2 Cache (per Core): 256 KB

      L3 Cache: 8 MB

      Memory: 16 GB

      Boot ROM Version: MBP101.00EE.B0A

      SMC Version (system): 2.3f36

  • by Dennis H,

    Dennis H Dennis H Feb 26, 2016 7:33 PM in response to Dennis H
    Level 1 (0 points)
    Feb 26, 2016 7:33 PM in response to Dennis H

    I Even tried my wife's MBPro 13" with the same results.

  • by sberman,

    sberman sberman Feb 26, 2016 10:39 PM in response to Dennis H
    Level 8 (40,861 points)
    Feb 26, 2016 10:39 PM in response to Dennis H

    Be sure you are reading the instructions in the article very carefully.  Also, tell us exactly at which step you see the message "OS X could not be installed..."

     

    • Have you downloaded the OS X installer from the Mac App Store as instructed in the first step?
    • Is this installer in your Applications folder where it belongs?
    • Is it about 6 gigabytes as it should be?
    • Did the installer actually open when the download finished?  If so, did you then quit the installer?
  • by Dennis H,

    Dennis H Dennis H Feb 27, 2016 3:53 AM in response to sberman
    Level 1 (0 points)
    Feb 27, 2016 3:53 AM in response to sberman

    RE:

    Have you downloaded the OS X installer from the Mac App Store as instructed in the first step?

    Is this installer in your Applications folder where it belongs?

    Is it about 6 gigabytes as it should be?

    Did the installer open?

    Did you quit the installer?


    ( Sorry using my iPad this is tedious trying to "type".)

     

    Yes, yes, yes, yes.and yes.

     

    i Always see the error message after booting to the external and choosing "continue" to install and after choosing the device, the external, and another I "agree".

  • by arthur,

    arthur arthur Feb 27, 2016 4:10 AM in response to Dennis H
    Level 5 (5,193 points)
    iBooks
    Feb 27, 2016 4:10 AM in response to Dennis H

    Try using Diskmaker X http://diskmakerx.com/

    Works for me.

  • by Dennis H,

    Dennis H Dennis H Feb 27, 2016 4:23 AM in response to arthur
    Level 1 (0 points)
    Feb 27, 2016 4:23 AM in response to arthur

    I tried that too. NG

     

    I've done this many times, for every OS since 2009.

     

    Thanks,

    Dennis

  • by Csound1,

    Csound1 Csound1 Feb 27, 2016 5:20 AM in response to Dennis H
    Level 9 (51,241 points)
    Desktops
    Feb 27, 2016 5:20 AM in response to Dennis H

    Then you are doing something wrong, because it works. You are the only unknown part of the procedure.

     

    Tell me in detail everything from the age and model of your Mac to the filename and size of the installer file. And have you tried a normal App Store install.

  • by arthur,

    arthur arthur Feb 27, 2016 6:03 AM in response to Dennis H
    Level 5 (5,193 points)
    iBooks
    Feb 27, 2016 6:03 AM in response to Dennis H

    Strange. I've used Diskmaker for a few years, always works.

    Makes me think there is something wrong with your OS X installation.

    Have you used any "cleaners" like CleanMyMac or MacKeeper or anything of that ilk?

    Other thoughts:

    Repair your HD with Disk Utility.

    Reinstall OS X over your current installation.

    If you've used any of the "cleaners" , your OS may be effed. In that case you should start over with a clean install.

    An etrecheck report may be useful here: http://www.etrecheck.com

  • by Dennis H,

    Dennis H Dennis H Feb 27, 2016 8:39 AM in response to arthur
    Level 1 (0 points)
    Feb 27, 2016 8:39 AM in response to arthur

    THANKS everyone!

     

    My OS X installer file was corrupt twice.

     

    Alls good now.

     

    Dennis