Dual boot Win10 Win7

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  1. Posts : 12
    Windows 10
    Thread Starter


    Thanks for all the links. I more or less of know where my GBs go. I have lots and lots of photos, most on D: but some on C: And C: contains all the rest: programs (some big), docs, a part of the photos, games (some quite space consuming).

    Win10 came with lots of apps I never use (why cannot a pc come "naked" out-of-the-box?) and I haven't had time yet to look into which ones I can delete safely besides the one I already got rid off. What really is a pain is that when you delete a program you very often have left-over files, despite CCleaner or other cleaning programs. I haven't found a solution for that and am afraid to just delete the left-overs. One of your links enumerates ways to delete apps and also has a link to a MS page that separates Windows from system apps. I will have a further look into that to see what apps I can delete without creating problems, but deleting these unnecessary apps won't make a significant change to the space available on my C:.

    Unfortunately my old laptop broke down (if it hadn't I could have had Win7 and the database on it), so I do not know how much space the programs that do not run on Win10 would take up. I can only guess. Since you say a partition on D: is a possibility, that probably would be the better option. I could allocate some 100GB, to be on the safe side, and still have plenty left over on that drive for storage.

    I do use the internet when working with this database, so the thing you say about security is something to worry about. When support ends for Win7 the risks to get infected are bigger I guess. How does a virus program work if you work with a dual boot, would it protect in both O/S? And would it work for the D: drive as well? I believe I read somewhere that in order to have a boot menu with options (currently I only have Win10 listed there), you have to disable secure boot. That would make the pc more vulnerable to root kits...

    - - - Updated - - -


    What you say about a VM sounds interesting. So you would have Win7 in a window, in a virtual box (something like a sandbox?). Would you only use the space necessary for the programs and files you use in this virtual box, or would you have to allocate a predetermined space as well as with dual boot?

    Would that limit possible infections from the internet too?
    And would it be necessary to have this VM on C: or can you do this on D: as well with Win10 on C:?
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  2. Posts : 34,997
    Win 10 Pro (1903) (2nd PC is 21H2)

    The VM space can be anywhere you like... it can have or not have internet access, as you like.

    Obviously you need as much space as for an installed OS + programs, plus some for the actual program.

    Dual boot: each OS that runs has separately installed programs, likewise, needs its own AV.
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  3. Posts : 11,400
    Windows 10 Home x64 Version 21H2 Build 19044.1706

    I do use the internet when working with this database
    If you are going to need to continue to use that database after Win7 support ends then you will be more vulnerable than a Win10 user would be.

    dalchina - The sum total of my knowledge about VMs is contained in your earlier post on the subject. If Judith were to have a Win7 VM, would the overall Win10 OS & WD also protect that VM?

    Judith - Is there really no hope of using that database within Win10? What is the limiting factor? What database application does it run in or it is a standalone database?

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  4. Posts : 34,997
    Win 10 Pro (1903) (2nd PC is 21H2)

    If you want security on the virtual machine you need to install security software on the virtual machine. The host (Win 10) does not scan files being downloaded to the OS running as a virtual machine.
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  5. Posts : 13,934
    Windows 10 Pro X64 21H1 19043.1503

    I would install Microsoft Security Essentials on the Windows 7 VM running under Windows 10.
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  6. Posts : 105

    As I understand, you want a Windows 7 installation in order to run specific software. If the software does NOT require Internet or network access then the solution should be simple - add the second physical drive with your bootable Win7 just like you have now.

    Go into your BIOS and set the POST timing to delay for a few seconds. During boot up use your hot key to change the bootable drive and you're done.

    To set this up, remove (unplug) your Win10 drive in order to set up your Win7 drive, then reconnect the Win10 drive.
    Last edited by GEWB; 12 Oct 2019 at 20:16.
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  7. Posts : 12
    Windows 10
    Thread Starter

    Sorry to not have responded for some days. I've been away this weekend and was operated upon yesterday, so I wasn't able/quite fit to look into the remarks and proposals made here.

    Try3/Denis, I investigated some more and am waiting for a reply from someone. I know that development and support for this database has stopped. But it now appears a Win10 compatible version did get released a couple of years ago. But since the company has stopped to exist, I am not sure if I can still can my hands on that Win10 compatible version and moreover activate it. And also I am wondering, should I invest in software that has stopped. What if MS comes up with yet another version? It just postpones the problem...

    Dalchina, I read (VirtualBox vs. VMware Player: The Best Virtual Machine for Windows) that there are, grosso modo, 2 free options for a VM: VirtualBox and VMware with each their pros and cons. And I would need to pre-dedicate space to this VM. So I need to determine beforehand how much GB to allocate, as I would have to with a dual boot (so I'd better do this on D:, to have plenty of space). If, like you say, this VM would open in a window and I can switch between windows, I could make my online searches in Win10 (thus being protected against virusses with only one AV program). And I may even be able to do the things I need to do on Word or imaging processing in Win10 and only handle the database in the window containing the VM + my database. Or could I not? Can you copy and paste (plain) text between these windows?
    So a VM, instead of a dual boot would give me the advantage only 1 antivirus program (supposedly) and as a (supposedly) disadvantage possibly speed.

    GEWB, the software is a database and in itself it does not require internet to run. I surf the internet to obtain info with which I create records that go into this database. I may add text or quotes, and photos, in these records.
    I am not quite sure what you mean by "add the second physical drive with your bootable Win7 just like you have now". Are you proposing to put Win7 on the D: drive?
    For the moment, with only Win10 installed, my boot menu has no other options than Win10 (my old laptop showed DVD and USB even if no bootable item was inserted). I've never removed (unplugged) something in the boot menu. I'm not sure how that would work... it may leave me with nothing if I remove Win10 ??? In this scenario I guess I would have to go into the Bios and change the boot priority every time I switch between Win10 or Win7? And an AV for both operating systems?
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  8. Posts : 34,997
    Win 10 Pro (1903) (2nd PC is 21H2)

    Hope you're recovering from the operation..

    So I need to determine beforehand how much GB to allocate
    This space is just a folder; within that is an installed OS and its working space. You install Virtualbox, run it. then configure a virtual machine, which is when you set the space and create the virtual machine. You then install- say- XP- which uses space in the folder. The installation requires an iso or boot disk for - say- XP- and installation looks normal, but occurs within a window.

    Files can be shared between the host OS - Win 10- and the virtual machine.

    If -say- XP is given access to the internet, it should have an AV installed to protect it.

    You can find e.g. videos on Youtube:
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  9. Posts : 13,586

    If you install w7 in a native bootable Virtual Hard Drive, you do not need to change existing layout or partitions.
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  10. Posts : 12
    Windows 10
    Thread Starter

    Hi everyone,

    I just wanted to let you know that I solved my problem with this database in a different way, so no need for a dual boot or a VM.

    I wish to thank everyone that tried to help. And even though I didn't make use of them (for now, you knows what the future may bring), perhaps some other people that intend to add an older version of Windows to their computer can benefit from your expertise answers and suggestions.

    Thanks a lot all!
      My Computer


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