Windows 10: multi-boot Windows 10 install questions Solved

  1. Posts : 3
    Windows 7 Pro 64 bit
       28 Oct 2015 #1

    multi-boot Windows 10 install questions

    Currently I have XP Pro 32-bit, XP X64, and Win 7 Pro 64 bit installed on my system. Each OS is installed on a separate hard drive. The system has 4 hard drives (and 5 partitions per drive) and I've setup the 4th hard drive with empty partitions in case I decide to buy and install Windows 10.

    I assume I'd have to buy Win 10 since I'll be multi-booting instead of replacing Win 7.

    I had to install Win 7 from XP X64 in order to specify the partition I wanted Win 7 to be installed on and to prevent it from re-lettering the partitions such as re-lettering the Win 7 partition to C: (it's installed on N: ).

    If I do buy Win 10, will I need to go through the same install method, install from either XP X64 or Win 7 Pro 64 bit in order to specify the install partition for Win 10 and keep it from re-lettering partitions?

    I'm also wondering about partition size. Currently I have Win 7 installed on a 64 GB partition, and I install almost all programs on a different 512 GB partition (O: ). Would 64 GB be enough for Win 10, and if not what partition size should I use?
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  2. Posts : 55
    macOS Sierra, Windows 10 Pro
       28 Oct 2015 #2

    10 takes a lot less space than 7 so a 64GB will be enough.
    Can't help you with the other questions. I've never had a system with 4 hard drives.
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  3. Posts : 2,234
    Windows 10 Pro 64-bit 1607 (AE build 14393.1198)
       28 Oct 2015 #3

    Usually starting setup from within Windows keeps the drive letters as you have them, but it is not guaranteed. A full installation of Windows 10, Office and some other stuff should not exceed 30-40GB, so 64GB should be enough but then you have little space left for data. If the free space is less than 15GB you may also experience some delays due to insufficient space for the swap file.
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  4. Posts : 3
    Windows 7 Pro 64 bit
    Thread Starter
       28 Oct 2015 #4

    Office would go into a separate partition. The swap file in yet another partition (on a different drive). I turn off hibernate mode so that hiberfil.sys doesn't take up space (that one can't be relocated).

    The other issue is if I have to buy Win 10, or if I can use the Win 7 activation key to at least try Win 10, then remove it from my system (like doing an image restore of C: (boot) and N: (Win 7) partitions to get to a pre Win 10 state).
      My ComputerSystem Spec

  5. Posts : 2,234
    Windows 10 Pro 64-bit 1607 (AE build 14393.1198)
       28 Oct 2015 #5

    If you have a genuine Windows 7 with SP1 or Windows 8.1 installation, you can run a utility included in the Windows 10 setup and create a file GenuineTicket.xml Then clean-install Windows 10 (no need to upgrade first) and copy this file at the appropriate folder. Restart the computer with internet connection to activate. Read all about it here. So before you format the disk, create that file and save it on a USB Flash drive. Then you can just delete all partitions and clean-install Windows 10 and use the file to activate for free.
      My ComputerSystem Spec

  6. Posts : 3
    Windows 7 Pro 64 bit
    Thread Starter
       31 Oct 2015 #6

    Thanks for the help, but I want to have both Win 7 and Win 10 installed and activated (separate partitions on separate drives), so to comply with Microsoft's rules, I'll have to buy Windows 10.
      My ComputerSystem Spec


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