HT202516: Reset the DNS cache in OS X

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dr.migration
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Q: how can i change dns as already erased for clean install

Hi , i am new to mac users. I am stuck to a strange problem like i got message "OS X Yosemite failed to download" "Use the Purchases..how can i change dns as i already have erased hardisk nd now i cant use macbook as its not getting installed .pls advise

MacBook Pro, OS X Yosemite (10.10)

Posted on Aug 13, 2015 1:53 AM

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dr.migration

Q: how can i change dns as already erased for clean install

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  • by Grant Bennet-Alder,

    Grant Bennet-Alder Grant Bennet-Alder Aug 13, 2015 7:26 AM in response to dr.migration
    Level 9 (60,774 points)
    Desktops
    Aug 13, 2015 7:26 AM in response to dr.migration

    ¿what is the connection of DNS to your issue?

     

    You seem to be reaching the Mac App store. Are you using the "re-Install" feature of Recovery? Downloading with Safari will not accomplish what you need.

     

    OS X: About OS X Recovery - Apple Support

     

    .

  • by dr.migration,

    dr.migration dr.migration Aug 13, 2015 5:49 PM in response to Grant Bennet-Alder
    Level 1 (0 points)
    Aug 13, 2015 5:49 PM in response to Grant Bennet-Alder

    Thanks Mr Bennet,

     

    I dont have any idea about dns  i was going through discussions of like similar problem others have faced so come across a solution which requires a change in dns.ok for a while  leave it a side ...i will explain what actually i did.

     

    I thought to give a clean install of os x in my mac by erasing my harddisk as wel,so followed following steps.

    1.booted mac with option r and used utility to erase my hardisk....

    2. after erasing selected reinstall ox tab and followed few steps and which asked me to sign in icoud as well (all good till here)

    3.Then when downloading starts it takes 6 to12 hrs remaining but after 3-4 hrs it displays a mess "os x yosmite failed to downlaod use purchases page to try again"

    4.I have done this many times and have tried all times in days and night but problem is same.

    5.I have no hardware issue with my mac , it was working perfect untill i did this.

    6.Now as i have erased the harddisk there is no OS installed , so even if i dont press R with option it takes me to same page for reinstalling or restoring it from backup,utility etc page.

    7 many people on this discussion page says its a apple server problem but where should i go ....feeling very bad abt this.

    8. I dont have a backup to restore and also i am on a fibre 12 Mbps internet speed so cant understand what is the issue..


    Its out of free support as wel ,can u advise how to fix it.... the error looks like the below image ..many thanks

    Screen Shot 2014-10-17 at 3.55.56 pm.png



  • by Drew Reece,

    Drew Reece Drew Reece Aug 13, 2015 5:54 PM in response to dr.migration
    Level 5 (7,490 points)
    Notebooks
    Aug 13, 2015 5:54 PM in response to dr.migration

    Can you try connecting to an ethernet connection that is directly connected to your router or network switch?

     

    WiFi can be slow & unstable. The download is around 5GB for the OS, the initial internet recovery disk is also around 600MB. It can be many times faster on ethernet. If that fails you may need to consider editing your router settings to use another DNS server, however it seems that you should rule out WiFi instability if at all possible.

  • by Grant Bennet-Alder,

    Grant Bennet-Alder Grant Bennet-Alder Aug 13, 2015 6:35 PM in response to Drew Reece
    Level 9 (60,774 points)
    Desktops
    Aug 13, 2015 6:35 PM in response to Drew Reece

    You can also take it to the Apple store, where the Wi-Fi is really fast and download it there.

     

    If you make an appointment at the genius Bar, they will run diagnostics for you and get the download started for you. Your visit for these services is Free, as long as no parts are required. Your warranty status does not matter for this.

  • by dr.migration,

    dr.migration dr.migration Aug 13, 2015 8:01 PM in response to Grant Bennet-Alder
    Level 1 (0 points)
    Aug 13, 2015 8:01 PM in response to Grant Bennet-Alder

    Thanks Mr Bennet , I will make an appointment and also try Apple store wifi.I will update you  as wel about the outcome.many thanks

  • by dr.migration,

    dr.migration dr.migration Aug 18, 2015 9:04 AM in response to dr.migration
    Level 1 (0 points)
    Aug 18, 2015 9:04 AM in response to dr.migration

    Hi Mr Bennet, Yes all went good as soon as i tried it on apple wifi.it took around 1.50 hrs for me to set up a new os x yosemite.Many thanks to all for your advise.Also can u advise how to view things in full screen mode or view automatically when i open the concerned application.like if i open text editor its display size is almost 1/3 of the total screen.I tried but it still remains in same view size.as i mentioned earlier i am new to mac so still learning about it.Any advise will be highly appreciated.

  • by Drew Reece,

    Drew Reece Drew Reece Aug 18, 2015 9:20 AM in response to dr.migration
    Level 5 (7,490 points)
    Notebooks
    Aug 18, 2015 9:20 AM in response to dr.migration

    Thanks for letting us know it was resolved

     

    Apps have a fullscreen button in the top right corner (2 diagonal arrows). Click that to go fullscreen. To leave that mode move the mouse into the top right corner & click the same icon again (this time it's blue).

     

    You should probably get used to using the OS X help menu. It shows menu items & links to lots of info.

     

    The online help is worth a look too…

    https://www.apple.com/support/mac/

  • by Grant Bennet-Alder,

    Grant Bennet-Alder Grant Bennet-Alder Aug 18, 2015 11:11 AM in response to Drew Reece
    Level 9 (60,774 points)
    Desktops
    Aug 18, 2015 11:11 AM in response to Drew Reece

    Before there was "Full Screen" users would simply drag the bottom right corner of a window down and to the right, and reposition the top of the window by dragging its title-Bar. This allows you to leave part of the desktop or another window showing behind.

  • by Drew Reece,

    Drew Reece Drew Reece Aug 18, 2015 11:33 AM in response to Grant Bennet-Alder
    Level 5 (7,490 points)
    Notebooks
    Aug 18, 2015 11:33 AM in response to Grant Bennet-Alder

    We used to have the green window button to 'maximise' windows to fill the screen without using fullscren mode. Now you need to hold 'alt' (option) and click it to get that behaviour

    http://osxdaily.com/2014/10/28/maximize-zoom-windows-os-x-mac/

  • by dr.migration,

    dr.migration dr.migration Aug 18, 2015 4:23 PM in response to Drew Reece
    Level 1 (0 points)
    Aug 18, 2015 4:23 PM in response to Drew Reece

    Thanks i will try it and will update here..