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Thread: Windows "missing operating system" after Ubuntu 12.10 instal?

  1. #31
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    Re: Windows "missing operating system" after Ubuntu 12.10 instal?

    Do you mean reinstall windows? I tried using a repair disk and nothing happened..

  2. #32
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    Re: Windows "missing operating system" after Ubuntu 12.10 instal?

    Windows needs to be in the first four partitions, so it is MBR in hybrid partition configurations used by Macs to boot Windows.

    http://www.rodsbooks.com/gdisk/hybrid.html
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  3. #33
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    Re: Windows "missing operating system" after Ubuntu 12.10 instal?

    Quote Originally Posted by oldfred View Post
    Windows needs to be in the first four partitions, so it is MBR in hybrid partition configurations used by Macs to boot Windows.

    http://www.rodsbooks.com/gdisk/hybrid.html
    I'm a bit confused about this, but in specific what makes them "flaky and dangerous"? Will creating a hybrid MBR allow me to boot all three os?

  4. #34
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    Re: Windows "missing operating system" after Ubuntu 12.10 instal?

    I think the issue is each does not know about the other.

    Most partition tools then do not know that you have to keep them in sync, so it is up to the user to know what he is doing and not use anything that can get the two out of sync.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  5. #35
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    Re: Windows "missing operating system" after Ubuntu 12.10 instal?

    So in the case of the user not knowing what he is doing (me), how do I fix it...

  6. #36
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    Re: Windows "missing operating system" after Ubuntu 12.10 instal?

    bump?

  7. #37
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    Re: Windows "missing operating system" after Ubuntu 12.10 instal?

    I do not know Macs.

    But I thought the whole idea of hybrid was so you could install Windows in MBR mode as that seems to be the only way it works with Macs. And Ubuntu will boot from a gpt drive so it does not have to be MBR or can be beyond the first 4 partitions.. And hybrid only syncs the first 4 partitions so Windows has to be in sda1 thru sda4 or the primary in MBR.

    You need to reverse the locations on the drive of Windows & Ubuntu. How did you get Windows out of the primary partitions? I do not know if somehow you renumbered them, if so reverse that. Otherwise it looks like a lot of reinstall?
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  8. #38
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    Re: Windows "missing operating system" after Ubuntu 12.10 instal?

    I typed the command diskutil list, and here's what I got:

    /dev/disk0
    #: TYPE NAME SIZE IDENTIFIER
    0: GUID_partition_scheme *250.1 GB disk0
    1: EFI 209.7 MB disk0s1
    2: Apple_HFS Macintosh HD 192.4 GB disk0s2
    3: Apple_Boot Recovery HD 650.0 MB disk0s3
    4: Microsoft Basic Data 10.0 GB disk0s4
    5: Linux Swap 1.1 GB disk0s5
    6: Microsoft Basic Data BOOTCAMP 45.7 GB disk0s6
    /dev/disk2
    #: TYPE NAME SIZE IDENTIFIER
    0: Apple_partition_scheme *17.3 MB disk2
    1: Apple_partition_map 32.3 KB disk2s1
    2: Apple_HFS Flash Player 17.3 MB disk2s2

    Did I mess something up?

  9. #39
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    Re: Windows "missing operating system" after Ubuntu 12.10 instal?

    Afraid I do not know more than what I have posted. And I do not know your Mac tools on how to fix anything. I only read on hybrid configurations as I was trying to understand gpt partitions from the rodbooks site.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  10. #40
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    Re: Windows "missing operating system" after Ubuntu 12.10 instal?

    Has no one else had this happen to them? I'm a bit confused as to why this happened in the first place.

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