Computer won't boot due. Most likely wrong disk set to Active?


  1. Posts : 4
    Windows 7 Ultimate 64bit
       #1

    Computer won't boot due. Most likely wrong disk set to Active?


    Hey umm well I was playing around with my newly built desktop and trying to sort out my hard drive and such I accidently set a disk to "active" thinking it would do nothing I went about my business and continued to use my desktop until the following day.

    So just an 1 hour ago I tried to boot up my desktop and was greeted with
    "BOOT MGR IS MISSING - Cltrl+alt+delete to reboot"

    I more or less knew that the disk I was messing with last night had caused this. So I grabbed my windows disk and started up and went straight into command prompt to sort it out. However now I have set my windows disk to active and all others to inactive my computer is still telling me Boot Mgr is missing, and yes I have changed it so it will boot from my Hard Drive but still.......No luck

    Any help would be greatly appreciated! Any more information needed just ask

    Thanks Tom
      My Computer


  2. Posts : 4
    Windows 7 Ultimate 64bit
    Thread Starter
       #2

    Don't worry about it....Problem Solved.
      My Computer


  3. Posts : 6,285
    Windows 10 Pro X64
       #3

    Mind sharing what the fix was?
      My Computer

  4.    #4

    Partitiions are set Active, not disks. If you set another partition Active than the WIn7 or it's System Reserved boot partition (preferred if you have it) then you need to move the Active flag back where it was: Mark Partition Active

    If Win7 doesn't start then you'll also need to Startup Repair - Run 3 Separate Times.
      My Computer


  5. Posts : 4
    Windows 7 Ultimate 64bit
    Thread Starter
       #5

    Thanks for the correction Gregrocker.

    Umm the fix was to access command prompt on the installation disk and access DISKPART where I checked the volume names and remembered that part of my SSD was partitioned to "System Reserve" I soon realised it was this partition that need to be active and went about this ensuring all other partitions were inactive and the "System Reserve" was active.

    (SHIFT+F10) OPEN CMD > DISKPART > LIST DISK > SELECT DISK 0 > LIST PARTITION > SELECT PARTITION 1 > ACTIVE

    The rest I followed the same steps as above but with each other partition I would change it to "Inactive" Then eventually exit "cmd" and reboot ensuring it was booting from my SSD.

    (Disk0 and Partition 1 in my circumstance)
      My Computer

  6.    #6

    Since only one partition on a HD can be marked Active at a time, it isn't necessary to mark the others Inactive.
      My Computer


  7. Posts : 4
    Windows 7 Ultimate 64bit
    Thread Starter
       #7

    I suppose you are correct however I ensured that the other partitions weren't active by ensuring they were all inactive.

    Not unless when you make one active the others automatically become inactive? If this is the case I didn't know that and will remember for future use. However if not then doing what I did caused no harm. =D
      My Computer


 

  Related Discussions
Our Sites
Site Links
About Us
Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 23:35.
Find Us