HT204904: How to reinstall OS X

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sz.balazs0808

Q: Why does it takes 100 hours to download the OS X El Capitan?

According to the downloader, there is left 104 hours and 14 minutes. I ereased the ssd, because I wanted to reinstall the OS.
What should I do? I tried different DNS servers, I have a fast internet.

MacBook Air, OS X El Capitan (10.11.4)

Posted on Jul 18, 2016 9:05 AM

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Q: Why does it takes 100 hours to download the OS X El Capitan?

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  • by erin_b1,

    erin_b1 erin_b1 Jul 19, 2016 5:51 AM in response to sz.balazs0808
    Community Specialists
    Jul 19, 2016 5:51 AM in response to sz.balazs0808

    Hello sz.balazs0808,

     

    Thank you for using Apple Support Communities. 

     

    I see that you are attempting to reinstall OS X and it is taking longer than normal. I know how important it is to make sure that you are able to reinstall the OS on your MacBook Air. I'll be more than happy to assist you with this. 

     

    Use How to reinstall OS X, and make sure that your current broadband Internet connection meets the following requirements, specifically, this section:

     

    Learn more

    To download and reinstall OS X using OS X Recovery, you need a broadband Internet connection that meets the following requirements. If you don't know what to do, try a different Internet connection, such as at your work or another home.

    • The connection is configured to use DHCP over Wi-Fi or Ethernet, not PPPoE (if there is no router handling the PPPoE connection).
    • The connection is not using 802.1X or other certificate-based authentication.
    • The connection is not using a proxy server configured in Network preferences.
    • If the connection is using the WEP or WPA-Enterprise security protocols, you can use OS X Recovery. If the connection is using WPA/WPA2, you can use OS X Recovery or OS X Internet Recovery.
    • If the connection is using a captive network, such as a network that displays a login or agreement page before you can access the Internet, you can use OS X Recovery but not OS X Internet Recovery. 

    When you download OS X using OS X Recovery, your computer's serial number is sent to Apple to help authenticate your request. 

     

    If you are on a public or shared network, bandwidth could be limited or restricted at the network level, and could be why it is displaying such a long download time. If the download completes faster on an alternate network, I would advise to contact your Internet Service Provider for further assistance. 

     

    Best Regards.