Windows 10: Lost half of dual boot

Discus and support Lost half of dual boot in Windows 10 Installation and Upgrade to solve the problem; Having run the Insider program for several months I decided to use my Windows 7 Pro disk to upgrade to Windows 10 Pro by creating a new partition and... Discussion in 'Windows 10 Installation and Upgrade' started by colirv, Sep 27, 2015.

  1. colirv Win User

    Lost half of dual boot


    Having run the Insider program for several months I decided to use my Windows 7 Pro disk to upgrade to Windows 10 Pro by creating a new partition and installing and upgrading there. The PC has happily dual-booted for a month or so from Volume2 (Insider on the original System Reserved and C: partitions) and Volume3 (Windows 10 Pro on ILost half of dual boot :). I've been gradually building up Volume3 with all my programs ready to transfer permanently, but as I was running out of room I used MiniTool Partition Wizard (from Volume2) to reduce the size of Volume2 and increase the size of Volume3. I realise now that was a daft thing to do, as the PC will no longer boot from Volume3! Is there a relatively simple way of making Volume3 bootable again? If too much is involved I may decide simply to run Insider for ever.

    Update - I should have added that I've tried repairing it using the Windows 10 disk with which I installed it, and it simply says that it's not repairable.

    :)
     
    colirv, Sep 27, 2015
    #1

  2. Dual-boot Windows 7/10 or 8/10; does pestering stop?

    I understand dual-boots and have built a few of them. That's not my question.

    Suppose I build a dual-boot 7/10 or 8/10. Given the high degree of pestering Microsoft is doing to 7 and 8 users to get them to move to 10, will Microsoft continue to pester me when I use the 7/8 half of a dual-boot? Does Windows Update still offer the many
    move-to-10 upgrades or does that stop?
     
    baroque-quest, Sep 27, 2015
    #2
  3. How to Dual Boot Windows 10 with Other Versions of Windows, macOS and Linux

    Andre, if I want to uninstall windows 10, without lost Windows 8.1 boot?

    How can I make the bootmanager to WIndows 8.1?

    PD: The system is UEFI based BIOS

    PD1: still I have not windows 10 dual boot with Windows 8.1
     
    Allan Havid Ramirez, Sep 27, 2015
    #3
  4. NavyLCDR New Member

    Lost half of dual boot

    Make a Macrium Reflect Free bootable USB/DVD. Boot from that, and in the restore options will be a boot repair utility. You can try using that.

    Macrium Reflect Free
     
    NavyLCDR, Sep 27, 2015
    #4
  5. colirv Win User
    Thanks for that. I already had a Macrium boot CD, so tried that. It found both operating systems, but on selecting the one I wanted to repair, the next page didn't give me a boot option. However, it reminded me that just over a week ago I'd tried out my new USB3 drive with a disk image from Macrium, so ended up restoring that. It means redoing the large amount of rearranging over the last week, but at least my dual booting is now working again.
     
    colirv, Apr 4, 2018
    #5
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Lost half of dual boot

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