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Windows 7 MBR overwrote Windows 8 MBR - Windows 7 only shows up on the Boot manger RRS feed

  • Question

  • Hello there,

    I have been using windows 8 for quite sometime and wanted windows 7.  What i did was install windows 7 fresh on another hard drive and windows 8 on another hard drive.  My setup looks like the on below.

    320GB HD - Windows 8

    500GB HD - Windows 7

    Now my problem is: When i installed windows 7 fresh on the 500GB hard drive. I can only Boot windows 7.  Windows 8 has been removed and missing from the boot MBR.  The only way i can boot windows 8 is disconnect all my hard drives and only have my 320GB hard drive with windows 8 plugged in to use windows 8.   How can i add Windows 8 to the existing Boot MBR windows 7 is listed on?

    please help.

    Sunday, September 1, 2013 8:10 AM

Answers

  • When multibooting, you ALWAYS install the older OS first.

    Insert a Windows 8 Install CD, go to Repair your computer and run Startup Repair. It should create the proper bootloader with Windows 8 and Windows 7 as options.

    • Proposed as answer by Balaji M KundalamMVP Tuesday, September 3, 2013 5:53 PM
    • Marked as answer by Niki Han Tuesday, September 17, 2013 5:53 AM
    Monday, September 2, 2013 4:24 AM
  • Hi,

    Please try the method below.

    Open Command Prompt(Admin), type the command below:

    bcdboot x:\windows

    PS: X=Windows 8 system drive.


    Roger Lu
    TechNet Community Support


    • Edited by EMMmmmmmm Monday, September 2, 2013 3:26 PM d
    • Marked as answer by Niki Han Tuesday, September 17, 2013 5:52 AM
    Monday, September 2, 2013 3:25 PM

All replies

  • Anyone?
    Sunday, September 1, 2013 3:46 PM
  • When multibooting, you ALWAYS install the older OS first.

    Insert a Windows 8 Install CD, go to Repair your computer and run Startup Repair. It should create the proper bootloader with Windows 8 and Windows 7 as options.

    • Proposed as answer by Balaji M KundalamMVP Tuesday, September 3, 2013 5:53 PM
    • Marked as answer by Niki Han Tuesday, September 17, 2013 5:53 AM
    Monday, September 2, 2013 4:24 AM
  • Hi,

    Please try the method below.

    Open Command Prompt(Admin), type the command below:

    bcdboot x:\windows

    PS: X=Windows 8 system drive.


    Roger Lu
    TechNet Community Support


    • Edited by EMMmmmmmm Monday, September 2, 2013 3:26 PM d
    • Marked as answer by Niki Han Tuesday, September 17, 2013 5:52 AM
    Monday, September 2, 2013 3:25 PM