Fansn

Q: Unable to go to Mac from Windows 10

I have downloaded Windows 10 on my Mac but I can't go back to Mac OS. When I hold down the option key it only gives me an option for Windows. I've tried making Mac OS active from Windows but it didn't let me. What should I do to get back to Windows.

iMac

Posted on Jan 30, 2016 2:09 PM

Close

Q: Unable to go to Mac from Windows 10

  • All replies
  • Helpful answers

Page 1 Next
  • by KiltedTim,

    KiltedTim KiltedTim Jan 30, 2016 2:12 PM in response to Fansn
    Level 9 (55,862 points)
    Mac OS X
    Jan 30, 2016 2:12 PM in response to Fansn

    How, exactly, did you install Windows 10 on your Mac? Did you use the Boot Camp Assistant? Or did you just re-format the drive and install Windows?

  • by Kappy,

    Kappy Kappy Jan 30, 2016 2:13 PM in response to Fansn
    Level 10 (271,328 points)
    Desktops
    Jan 30, 2016 2:13 PM in response to Fansn

    You need to try reinstalling OS X. It would appear that in instilling Windows you have corrupted or erased your OS X volume. Have you tried booting from your Recovery HD?

     

    Boot Using Command+R keys:

     

      1. Restart the computer.

      2. Immediately after the chime press and hold down the

          "COMMAND" and the "R" keys together.

      3. Release the keys when the Utilities Menu appears.

  • by Fansn,

    Fansn Fansn Jan 30, 2016 2:26 PM in response to Kappy
    Level 1 (0 points)
    Jan 30, 2016 2:26 PM in response to Kappy

    It loaded up on a screen where its telling me to pick a wifi network and a spinning Earth on top. It's staying on this screen

  • by Fansn,

    Fansn Fansn Jan 30, 2016 2:29 PM in response to KiltedTim
    Level 1 (0 points)
    Jan 30, 2016 2:29 PM in response to KiltedTim

    I used boot camp assistant

  • by Kappy,

    Kappy Kappy Jan 30, 2016 2:32 PM in response to Fansn
    Level 10 (271,328 points)
    Desktops
    Jan 30, 2016 2:32 PM in response to Fansn

    Install OS X Using Network Recovery

     

    Be sure you have backed up your files because the following procedure will remove everything from the hard drive.

     

    Boot to the Network Recovery Server:

     

    Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. Wait patiently - 15-20 minutes - until the Recovery main menu appears.

     

    Partition and Format the hard drive:

     

    1. Select Disk Utility from the main menu and click on the Continue button.
    2. After DU loads select your newly installed hard drive (this is the out-dented entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
    3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Apply button and wait until the process has completed. Quit DU and return to the main menu.

     

    Reinstall OS X: Select Reinstall OS X and click on the Continue button. Be sure to select the correct drive to use if you have more than one.

     

    Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

     

    This should restore the version of OS X originally pre-installed on the computer.

  • by Fansn,

    Fansn Fansn Jan 30, 2016 2:55 PM in response to Kappy
    Level 1 (0 points)
    Jan 30, 2016 2:55 PM in response to Kappy

    It said apple.com/support  -20024

  • by Fansn,

    Fansn Fansn Jan 30, 2016 5:19 PM in response to Fansn
    Level 1 (0 points)
    Jan 30, 2016 5:19 PM in response to Fansn

    I tried a few times but the same thing came up

    wat do you think I should do

  • by Kappy,

    Kappy Kappy Jan 30, 2016 6:21 PM in response to Fansn
    Level 10 (271,328 points)
    Desktops
    Jan 30, 2016 6:21 PM in response to Fansn

    Exactly what model Mac do you have?

     

          Macs that can be upgraded to OS X El Capitan

     

     

             1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later

             2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later

             3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later

             4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later

             5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later

             6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later

             7. Xserve (Early 2009) - Model Identifier 3,1 or later

     

     

     

  • by Loner T,

    Loner T Loner T Jan 31, 2016 9:31 AM in response to Fansn
    Level 7 (24,202 points)
    Safari
    Jan 31, 2016 9:31 AM in response to Fansn
  • by Fansn,

    Fansn Fansn Jan 31, 2016 9:55 AM in response to Loner T
    Level 1 (0 points)
    Jan 31, 2016 9:55 AM in response to Loner T

    Thanks I'll try it

  • by Fansn,

    Fansn Fansn Jan 31, 2016 10:16 AM in response to Loner T
    Level 1 (0 points)
    Jan 31, 2016 10:16 AM in response to Loner T

    It just took me to the Windows starup screen where it said diagnostic check and then told me to restart my pc because it didn't start correctly.

  • by Fansn,

    Fansn Fansn Jan 31, 2016 10:18 AM in response to Fansn
    Level 1 (0 points)
    Jan 31, 2016 10:18 AM in response to Fansn

    It also gave me an option for advanced options

  • by Fansn,

    Fansn Fansn Jan 31, 2016 10:41 AM in response to Kappy
    Level 1 (0 points)
    Jan 31, 2016 10:41 AM in response to Kappy

    A 21.5 iMac (mid 2007 or newer)

  • by Loner T,

    Loner T Loner T Jan 31, 2016 12:47 PM in response to Fansn
    Level 7 (24,202 points)
    Safari
    Jan 31, 2016 12:47 PM in response to Fansn

    Can you post a screen shot similar to the following from Windows Disk Management? Please do not modify any partitions.

     

    W8.1-DiskManagement-BeforeExternalDisk.PNG

Page 1 Next