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Get "missing operating system" message when trying to access bootcamp

3990 Views 9 Replies Latest reply: Jun 19, 2013 11:30 AM by zczloak RSS
GREEKDEEJAYS Level 1 Level 1 (0 points)
Currently Being Moderated
Apr 22, 2013 8:37 AM


Get "missing operating system" message when trying to access bootcamp in win 7

i have windows instaled about a year now.yesterday i tranfer 300 gb of music in my i open my mac hold alt on start up to sellect opereting system,i found MacintosHD,recovery, and windows, and i select the windows to boot,but says to me (missing operating system).i boot again osx to see what hapend.osx is workin perfect.i tried to boot windows again but the same msg (missing operating system).i have not make any changes in my mac osx...!!!

MacBook Pro
  • Csound1 Level 7 Level 7 (32,255 points)

    Changes in OSX have no affect on Windows.


    Explain what you did with this 300G transfer, from where to where and how.

  • Csound1 Level 7 Level 7 (32,255 points)

    Reinstall Windows

  • Csound1 Level 7 Level 7 (32,255 points)

    You are the only person I have ever known to have this issue, OSX and Windows are entirly seperate, copying a file to one has nothing to do with the other. In short your description of your problem does not make sense.

  • Csound1 Level 7 Level 7 (32,255 points)

    Still does not make sense, Boot Camp is a seperate partition, you must be doing something wrong.


    Explain, step by step how and what you are trying to do.

  • dalstott Level 4 Level 4 (2,445 points)

    Re: today i format the disk and make a clean instal in osx lion.restore the osx from backup.restore and win7 from image too.


    What kind of a program did you use to make the Windows image that you used to restore to the cleanly formatted disk? If you did not use Paragon HDM or Winclone 3 software then it likely would fail to work based on past postings on this community. Read the comments I have collected below.





    Acronis 2011 w/ plus pak, didn't work well previously


    Ghost 15 - probably not


    Casper 6 works for Windows on Boot Camp only


    CopyCatX is more lengthy and sector copy so takes the longest.


    Paragon Hard Drive Suite 2011 because it works great

    and they have CampTune


    Windows 7 system backup and restore - Apple's goofy HFS read-only interferes with system and file backup.



    I have also used Casper, Clonezilla and Paragon but less regularly, Casper failed a few times, I stopped using it, Clonezilla worked but took forever (for me) Paragon (which I have only used twice) was the best but my sample is limited.



    HDM 2011 can do either offline or online backups, the difference is that with an offline backup, the entire partition (or disk) is unallocated. In an online backup, the backup utility is running against a partition that may be making changes to itself. When you run CCC or SD! in OS X, you're running an online backup. However, I would recommend (at least for the first backup) that you boot from the HDM recovery CD to do an offline backup. This will ensure that you have an *exact* copy of the parition/disk.



    I tried the native Windows backup utility.  It worked to backup and restore my Windows partition, but I noticed a "bad" side effect.  When I would restore a Windows Backup to my HD, it would corrupt my MacOS boot partition, so I would then have to restore the Mac partition as well.



    I created a test Windows 7 x64 Bootcamp partition (not whole dedicated HD) in my Mac Pro running 10.7.2. and made a Winclone image of it. Then I tried restoring it in three different scenarios:


    1. Restored it straight back to the partition I had imaged it from.


    2. Wiped the hard drive the original had been on, recreated the Bootcamp partition with Boot Camp Assistant, and restored it to that.


    3. Restored to a Bootcamp partition on a completely different hard drive.


    All three restores have been completely succesfull.


    The link is



    Make sure to turn off NTFS for Mac driver before imaging, if you have it installed.

    Winclone 3 allows you to migrate your Bootcamp partition from one Mac to another Mac and make sure Windows will boot. However, if the processor (for example, Core Duo or i7) is a different type, the restored version of Windows may not be supported or be able to run on the new Mac. If you are migrating between Macs that are the same type (MacBook Air to MacBook Air, for example), you will have the greatest chance of success. You can try to restore Winclone images between different types of Macs (for example, a Mac Pro to a Mac Mini), but be aware that if Windows boots but does not reach the desktop, it is probably not an issue with Winclone, but rather the change in processor type.



    Winclone 3 has to have the same size partition or bigger. You would first install winclone on the current drive, and create the image file from the bootcamp partition. Then swap over the drives. Set up and copy the OSX to the new drive. Use bootcamp assistant to make new bootcamp drive. Quit when done. Install winclone on new drive. Use the image you made to restore to new bootcamp partition.

  • zczloak Level 1 Level 1 (0 points)

    Hello. I have the same problem, first installed windows 8 on my macbook using bootcamp, after that installed linux mint with adding new partitions to the exisiting hard drive (this may have been the cause of my issue), and have the same message like you have. Have a look at this, may help: ing-system/


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