OS's dmg location and how do i boot?

Discussion in 'macOS' started by zoran, Sep 27, 2016.

  1. zoran macrumors 68030

    Joined:
    Jun 30, 2005
    #1
    In Yosemity, im downloading ElCapitan and Siera from the AppStore...
    1. where are the downloaded dmg files located?
    2. how can i make bootable flashUSB drives out of them?
     
  2. keysofanxiety macrumors G3

    keysofanxiety

    Joined:
    Nov 23, 2011
    #2
    They download to the Applications folder, once completed. They'll be called something like 'Install El Capitan'.

    Instructions for making a bootable USB drive can be found here: http://osxdaily.com/2015/09/30/create-os-x-el-capitan-boot-install-drive/
     
  3. prisstratton macrumors 6502a

    prisstratton

    Joined:
    Dec 20, 2011
    Location:
    Winnipeg, Manitoba, Canada
    #3
    They are downloaded into your Applications folder and are called:

    El Cap: Install OS X El Capitan
    Sierra: Install macOS Sierra

    Use this to create a bootable USB drive: http://diskmakerx.com
     
  4. keysofanxiety macrumors G3

    keysofanxiety

    Joined:
    Nov 23, 2011
    #4
    This is even better advice, OP. That app saves the hassle of juggling Terminal commands and streamlines the process.
     
  5. zoran thread starter macrumors 68030

    Joined:
    Jun 30, 2005
    #5
    What if i place the "OSXinstallation" dmg file into a HD partition and then boot from that partition as a startup disk, execute dmg file etc??
     
  6. RumorzGuy macrumors 6502

    RumorzGuy

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    Sep 17, 2008
    Location:
    Guam, Mariana Islands, U.S.A.
    #6
    Just a small correction. They are not actually DMG files that you download, per se. They are installer apps.

    However, if you do a "Show package contents", you will see that within that application bundle, there is actually a DMG in Contents/SharedSupport called "InstallESD.dmg".
     
  7. zoran thread starter macrumors 68030

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    Jun 30, 2005
  8. Gav2k macrumors G3

    Gav2k

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    Jul 24, 2009
  9. zoran, Sep 28, 2016
    Last edited: Sep 28, 2016

    zoran thread starter macrumors 68030

    Joined:
    Jun 30, 2005
    #9
    Right now i can only use a Hard drive that has a free partition. Can i put in there the installer and boot the mac selecting that partition?
     
  10. T'hain Esh Kelch, Sep 28, 2016
    Last edited: Sep 28, 2016

    T'hain Esh Kelch macrumors 601

    T'hain Esh Kelch

    Joined:
    Aug 5, 2001
    Location:
    Denmark
    #10
    You can't just drop a random file on a random drive, and expect to boot from that random file. You need to install an OS.
     
  11. zoran thread starter macrumors 68030

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    Jun 30, 2005
    #11
    Im not getting get what you are saying.
     
  12. T'hain Esh Kelch macrumors 601

    T'hain Esh Kelch

    Joined:
    Aug 5, 2001
    Location:
    Denmark
    #12
    Should be "can't" and not "can". Sorry. Edited the post.
     
  13. RumorzGuy macrumors 6502

    RumorzGuy

    Joined:
    Sep 17, 2008
    Location:
    Guam, Mariana Islands, U.S.A.
    #13
    Zoran, in case you still don't understand what he is saying, what you download from Apple is an application bundle. You cannot boot your system from an application bundle, even if it is an installer. You need to have an installed system somewhere to boot from. That is, why for example, those of us who have unsupported Macs, have to take that installer app, use a patch, and install the system that the installer app contains on a flash drive or external drive or partition, and then from there, use that to install the system on our machine's internal hard drive. That is precisely what prisstratton is telling you to do, using diskmakerx. In other words, you need to actually install the system that the installer app contains on the partition that you mentioned.
     
  14. JohnDS macrumors 65816

    Joined:
    Oct 25, 2015
    #14
    If you just double click on the installer in the application folder, it will run and ask you for a location to install the OS. That is all there is to it. But you should make copies of the installers in another folder before you do that because the installer automatically erases itself after it has completed the install.
     
  15. simon lefisch macrumors 6502a

    simon lefisch

    Joined:
    Sep 29, 2014
    #15
    DiskmakerX has caused problems for many. The previously posted commands to run in Terminal have never failed (I have done them myself many times). Plus, it's always good to learn how to use Terminal. It's a very powerful tool.
     
  16. zoran thread starter macrumors 68030

    Joined:
    Jun 30, 2005
    #16
    Just a moment guys, i copied the installer to my external hard drives partition. Restarted my mac -holding the "option" key- and then i could choose between all the available drives that are installed including the partition. When i clicked on that partition, the installer came up and was ready to install the selected OSX.
    Doesn't this make sense?
     
  17. Fishrrman macrumors G5

    Fishrrman

    Joined:
    Feb 20, 2009
    #17
    OP wrote:
    "What if i place the "OSXinstallation" dmg file into a HD partition and then boot from that partition as a startup disk, execute dmg file etc??"

    The -BEST WAY- is to create a bootable USB install drive, as suggested above.

    I've found this out through my own experiences.
     

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