Windows 8 and 8.1 Forums


How to Correctly Install Windows 8.1 Preview

  1. #91


    If this has been answered already here in this thread then forgive me for skimming through the posts (and therefore missing it).

    Here's my situation:

    Windows 7 is installed on my hard drive. I don't intend to mess with that.
    I installed Windows 8 Enterprise to a VHD and I dual-boot that with my Windows 7 installation.

    Windows 8.1 will not let me update the VHD installation. So am I stuck installing it on a new VHD, or can I mount the Windows 8 VHD in Windows 7 and run setup from the Windows 8.1 ISO to update it from there?

      My System SpecsSystem Spec

  2. #92


    USA, Idaho
    Posts : 1,062
    Win 8, (VM win7, XP, Vista)


    Quote Originally Posted by TerryE View Post
    If this has been answered already here in this thread then forgive me for skimming through the posts (and therefore missing it).

    Here's my situation:

    Windows 7 is installed on my hard drive. I don't intend to mess with that.


    I installed Windows 8 Enterprise to a VHD and I dual-boot that with my Windows 7 installation.

    Windows 8.1 will not let me update the VHD installation. So am I stuck installing it on a new VHD, or can I mount the Windows 8 VHD in Windows 7 and run setup from the Windows 8.1 ISO to update it from there?
    Sorry. . .What is a VHD? Am I right to assume that is another term for VM as in Virtual Hard Drive. I ask because I have never heard or seen it put this way. . .Thank You.
      My System SpecsSystem Spec

  3. #93


    VHD = Virtual Hard Disk (or Drive)

    Hyoer-V uses this format, I believe. Windows 7 and Windows 8 allow you to create a virtual disk on your existing file system and attach it as another drive to your system. Then you can install another OS onto that drive and boot from it. That's how I run Windows 8 in a dual-boot setup with Windows 7.

    When I boot into Windows 8 using the VHD I am not allowed to update it to Windows 8.1 so I am guessing that I will need to go back to my Windows 7 install, attach the VHD (which results in it being assigned a separate drive letter), and then run the update from Windows 7, telling it to install to the attached drive.

    For example, if my Windows 8 installation is on C:\Win8\Windows8.vhd and I attach that as drive Q: on my Windows 7 system, I'm hoping I can then run setup from the Windows 8.1 media and tell it to update the Windows installation on Q:. I'm just not sure that can be done, or if anyone has tried it.
      My System SpecsSystem Spec

  4. #94


    USA, Idaho
    Posts : 1,062
    Win 8, (VM win7, XP, Vista)


    Quote Originally Posted by TerryE View Post
    VHD = Virtual Hard Disk (or Drive)

    Hyoer-V uses this format, I believe. Windows 7 and Windows 8 allow you to create a virtual disk on your existing file system and attach it as another drive to your system. Then you can install another OS onto that drive and boot from it. That's how I run Windows 8 in a dual-boot setup with Windows 7.

    When I boot into Windows 8 using the VHD I am not allowed to update it to Windows 8.1 so I am guessing that I will need to go back to my Windows 7 install, attach the VHD (which results in it being assigned a separate drive letter), and then run the update from Windows 7, telling it to install to the attached drive.

    For example, if my Windows 8 installation is on C:\Win8\Windows8.vhd and I attach that as drive Q: on my Windows 7 system, I'm hoping I can then run setup from the Windows 8.1 media and tell it to update the Windows installation on Q:. I'm just not sure that can be done, or if anyone has tried it.
    Thank you. Will have to pull some more info from Google to see if I can do this (brain only works one day a month). At present am running 8.1 in a VM within a SSD, thus works quit fast, so would the VHD setup within the SSD be any faster.
      My System SpecsSystem Spec

  5. #95


    I run two different Windows 8 installations:

    - One is a dual-boot VHD with Windows 7 as I described. That's the one I haven't yet been able to upgrade to 8.1
    - The other is a VMware Workstation VM running from an external USB 3.0 drive. I created a new VM for 8.1 just to experience a clean installation.

    The VHD installation is quicker but the VM isn't half bad. Of course part of that is the VM overhead and part may be attributable to the fact that the VM has 2 GB of memory while the VHD installation uses all the system memory (8 GB) and native hardware.

    The advantages of the VM: I can still run my favorite Windows 7 apps concurrent with the Windows 8 VM. If needed, I can freely copy files from Windows 7 to the VM (or vice-versa). There are no permissions issues. I can also run other systems like a server OS or a Linux VM while the Windows 8 VM is running. There's also a great deal more flexibility with the configuration of a VM.

    Booting to the VHD requires a reboot of the system, and while my Windows 7 drive is still available, most if it isn't accessible to me since I use a Microsoft account to logon to Windows 8. I'm not going to mess with the Windows 7 file and folder permissions. Anything I have installed on Windows 7 would have to be reinstalled on Windows 8 if I want to use it there. (Most of the time I don't do that.) If I want to go back to Windows 7 it's another reboot.
      My System SpecsSystem Spec

  6. #96


    USA, Idaho
    Posts : 1,062
    Win 8, (VM win7, XP, Vista)


    Quote Originally Posted by TerryE View Post
    I run two different Windows 8 installations:

    - One is a dual-boot VHD with Windows 7 as I described. That's the one I haven't yet been able to upgrade to 8.1
    - The other is a VMware Workstation VM running from an external USB 3.0 drive. I created a new VM for 8.1 just to experience a clean installation.


    The VHD installation is quicker but the VM isn't half bad. Of course part of that is the VM overhead and part may be attributable to the fact that the VM has 2 GB of memory while the VHD installation uses all the system memory (8 GB) and native hardware.

    The advantages of the VM: I can still run my favorite Windows 7 apps concurrent with the Windows 8 VM. If needed, I can freely copy files from Windows 7 to the VM (or vice-versa). There are no permissions issues. I can also run other systems like a server OS or a Linux VM while the Windows 8 VM is running. There's also a great deal more flexibility with the configuration of a VM.

    Booting to the VHD requires a reboot of the system, and while my Windows 7 drive is still available, most if it isn't accessible to me since I use a Microsoft account to logon to Windows 8. I'm not going to mess with the Windows 7 file and folder permissions. Anything I have installed on Windows 7 would have to be reinstalled on Windows 8 if I want to use it there. (Most of the time I don't do that.) If I want to go back to Windows 7 it's another reboot.
    No need to worry about memory (32 gigs) when setting up a VM in VMWare Workstation (give each VM (except XP) at least 8 gigs)). Will look into do the VHD this weekend (got the reality people coming buy tomorrow and Wed.
      My System SpecsSystem Spec

  7. #97


    Posts : 13
    Windows 8


    I bought a windows 8 system builder oem disk from a computer store when 8 came out a year ago, I got just 8 and not Pro since I felt I did not need it. So put in on a computer with a clean hard drive. So I do not have Pro, computer shows 6.2.9200 build 9200 Windows 8 64bit. I download the preview 8.1 iso 32bit and installed it on another computer just for testing. It shows 6.3.9431 build 9431 windows 8 Pro. In other words the only preview I see is for Pro, I have just windows 8 no pro. This is no problem for now but my question is when the final 8.1 comes out will there be a version for Windows 8 and Windows 8 Pro? Am I missing something? Lynn
      My System SpecsSystem Spec

  8. #98


    Posts : 2,627
    win8.1.1 enterprise


    Quote Originally Posted by Lynn View Post
    This is no problem for now but my question is when the final 8.1 comes out will there be a version for Windows 8 and Windows 8 Pro? Am I missing something? Lynn
    hello,it will not be an issue ,only difference is one for 32bit and one for 64bit ,happy computing
      My System SpecsSystem Spec

  9. #99


    Posts : 13
    Windows 8


    Caperjack, but I am right in saying there is a difference in Windows 8 and Windows 8 Pro? And you are saying the 8.1 will work on either as long as you have the right 32 or 64 bit?
      My System SpecsSystem Spec

  10. #100


    Posts : 2,627
    win8.1.1 enterprise


    Quote Originally Posted by Lynn View Post
    Caperjack, but I am right in saying there is a difference in Windows 8 and Windows 8 Pro? And you are saying the 8.1 will work on either as long as you have the right 32 or 64 bit?
    its my understanding of how it works,only difference is the 32&64 bits in the 2 downloads offered , yes it will work,having said that ,i have only done a full install so far of 8.1 64 bit ,not a upgrade ,i will not be doing a upgrade any time soon ,don't want to take the chance of frigging up my main computer
      My System SpecsSystem Spec

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How to Correctly Install Windows 8.1 Preview
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