1.    17 Nov 2015 #1
    Join Date : Oct 2014
    Posts : 15
    Windows 10 Pro

    How to remove Windows 8.1 from dual boot with Windows 10


    I am dual booting Windows 10 and Windows 8.1. Each operating system is on a separate physical solid state drive. My default is Windows 10. The Windows 10 OS was installed on the drive that originally contained Windows 7 when I dual booted Windows 7 and Windows 8.1. I don't have drive partitions to deal with as each operating system is on a separate physical drive.

    Now I would like to remove the dual boot by removing Windows 8.1, leaving just Windows 10. That will leave me with an unused SDD.

    When I am in Windows 10, the default OS, the msconfig Boot section shows Windows 10 as the default, as it should. To remove the dual boot, can I just Delete Windows 8.1 from the Boot section of msconfig and make the setting permanent?
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    Thanks
      My ComputerSystem Spec
  2.    17 Nov 2015 #2
    Join Date : Jul 2015
    Posts : 3,813
    10 Pro

    It depends where your boot files are. Does 10 boot if you remove the SSD with 8.1 on? If so yes - just delete it from msconfig.

    You don't need "Make all boot settings permanent" as this only applies to the options in the "Boot options" box. If you don't tick it selecting "Normal" on the general tab will reset boot options. If you tick it then it won't.
      My ComputerSystem Spec
  3.    18 Nov 2015 #3
    Join Date : Oct 2014
    Posts : 15
    Windows 10 Pro
    Thread Starter

    It is not convenient to physically remove the 8.1 boot drive. Is there a way to check the files and identify where the boot files are?


    Quote Originally Posted by lx07 View Post
    It depends where your boot files are. Does 10 boot if you remove the SSD with 8.1 on? If so yes - just delete it from msconfig.

    You don't need "Make all boot settings permanent" as this only applies to the options in the "Boot options" box. If you don't tick it selecting "Normal" on the general tab will reset boot options. If you tick it then it won't.
      My ComputerSystem Spec
  4.    18 Nov 2015 #4
    Join Date : Jul 2015
    Posts : 3,813
    10 Pro

    Sign onto 10 and run diskmgmt.msc - this should show you which disk has boot files.
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  5.    19 Nov 2015 #5
    Join Date : Oct 2014
    Posts : 15
    Windows 10 Pro
    Thread Starter

    Thanks. I checked for boot files using disk manager. They were on the C-drive where Windows 10 is located. So I deleted the Windows 8 installation from the boot list in msconfig and all is well. Thanks again.
    Quote Originally Posted by lx07 View Post
    Sign onto 10 and run diskmgmt.msc - this should show you which disk has boot files.
      My ComputerSystem Spec
  6.    19 Nov 2015 #6
    Join Date : Jul 2015
    Posts : 9,552
    Windows 10 Pro

    Quote Originally Posted by Halmo View Post
    Thanks. I checked for boot files using disk manager. They were on the C-drive where Windows 10 is located. So I deleted the Windows 8 installation from the boot list in msconfig and all is well. Thanks again.
    Well...just for future info - the partition labeled "boot" is not where the boot files are :-). The boot files are probably in a "system reserved" partition, formatted as FAT32, 100-500mb in size and may or may not be marked as "active". The partition labeled "boot" is the partition that contains the operating system that was loaded by the boot files. The boot files are very rarely on the same partition as the operating system unless the user moves them there.
      My ComputerSystem Spec

 


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