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  1.    17 Mar 2016 #1
    Join Date : Mar 2016
    Posts : 19
    Windows 10

    Dual Boot 10 and 8.1 massacre


    Ok so I have Windows 10 on my laptop. Upgraded at launch from 7. I'm beginning to build my own pc and wanted to try my old 8.1 iso, to see if it would still work. Plus just wanted something to do.

    I made a 45 gig partition of allocated space on my main disk. I booted from the USB and successfully installed 8.1. I then restarted and went back into Windows 10. Which I was on for the rest of the evening. I didn't need to do anything else with 8.1 so I was going to just get rid of it. I did so the same way that I've done with various Linux distro's in the past.

    I went into easy BCD and removed the boot process. And then I went into disk management And deleted the partition. And then extended my C back to full space.

    I restarted my computer and my heart stopped because the screen that came up said recovery, your PC/device needs to be repaired. I press enter to try again and nothing happens. I press F8 for start up settings and nothing happens. I've been waiting for something like this to happen. But it always sucks when it does.

    I think in messing with everything I somehow made my computer forget how to boot up windows 10. Because I went through the start up and the hard disk test and both of them passed. So I think it's still there and fine. I just don't know how to get to it.

    I have a system image recovery disk USB which I put in and tried to boot from and it tells me that I can continue to Windows 8.1. Which doesn't make sense because the recovery image was from windows 10. So it's like all confused and I'm freaking out.

    I'm really new at all of this internal tinkering stuff and I would really appreciate any help. Kind of a nervous wreck. Thank you.
      My ComputerSystem Spec
  2.    17 Mar 2016 #2
    Join Date : Nov 2015
    Posts : 4,885
    windows 10 Home threshold2

    You will not like my suggestion......... do a clean install of Windows 10.

    https://www.tenforums.com/tutorials/1...n-install.html

    Use a working computer and download the corresponding Win 10 iso files > burn it to a bootable media, DVD or USB > take it to this computer and run a Clean Install.
    Last edited by davidhk; 17 Mar 2016 at 10:34.
      My ComputerSystem Spec
  3.    17 Mar 2016 #3
    Join Date : Mar 2016
    Posts : 19
    Windows 10
    Thread Starter

    Oh damn. Seriously... Is there nothing I can do in bios or anything to reach?

    Also I won't have a copy of 10 since upgraded from the 7 that came with. I can use other means but didn't want to.

    Thanks for the response.
      My ComputerSystem Spec
  4.    17 Mar 2016 #4
    Join Date : Nov 2015
    Posts : 4,885
    windows 10 Home threshold2

    Windows 10 ISO file can be downloaded in the following 2 Official sites :

    Tech Bench
    https://www.microsoft.com/en-us/soft...brrWLRbagYCa0w)()

    Media creation Tool (MCT)
    https://www.microsoft.com/en-ca/soft...load/windows10

    My recommendation is to use Tech Bench link.
      My ComputerSystem Spec
  5.    17 Mar 2016 #5
    Join Date : Jul 2015
    Posts : 9,551
    Windows 10 Pro

    There are plenty of ways of fixing the no-boot problem without a clean install of Windows 10.

    If you have an operating computer, make a bootable USB flash drive of Kyhi's recovery disk:
    Windows 10 Recovery Tools - Bootable Rescue Disk - Windows 10 Forums

    Boot the computer from his rescue disk, run Macrium Reflect Free. Under the restore menu will be a utility to fix Windows startup problems. Start with that.
      My ComputerSystem Spec
  6.    17 Mar 2016 #6
    Join Date : Oct 2014
    Arnold, MD
    Posts : 29,606
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)

    Quote Originally Posted by NavyLCDR View Post
    There are plenty of ways of fixing the no-boot problem without a clean install of Windows 10.

    If you have an operating computer, make a bootable USB flash drive of Kyhi's recovery disk:
    Windows 10 Recovery Tools - Bootable Rescue Disk - Windows 10 Forums

    Boot the computer from his rescue disk, run Macrium Reflect Free. Under the restore menu will be a utility to fix Windows startup problems. Start with that.
    Yes, Macrium will rebuild the boot records. No need really for Kyhi's entire package. Just get the Macrium Reflect Free from their site, install it, and make a USB Rescue, and boot from it. Macrium Reflect Free
      My ComputersSystem Spec
  7.    17 Mar 2016 #7
    Join Date : Jul 2015
    Posts : 9,551
    Windows 10 Pro

    The advantage to using Kyhi's recovery drive is that it also has other troubleshooting tools available if Macrium Reflect Free doesn't work, like MiniTool Partition Wizard that we can use to see if there is still an EFI or System Reserved partition on the hard drive, EasyBCD so we can see what is in the BCD if there is one on the hard drive, and command prompt that we can use to run BCDBOOT to add the Windows installation to an existing BCD if we need to.
      My ComputerSystem Spec
  8.    17 Mar 2016 #8
    Join Date : Mar 2016
    Posts : 19
    Windows 10
    Thread Starter

    Ok awesome. I don't have have another available computer unfortunately. Will need to figure something out. Thank you so much for info. I'll let you guys know when I'm able.
      My ComputerSystem Spec
  9.    17 Mar 2016 #9
    Join Date : Nov 2015
    Posts : 4,885
    windows 10 Home threshold2

    Quote Originally Posted by ModestMice21 View Post
    Ok awesome. I don't have have another available computer unfortunately. Will need to figure something out. Thank you so much for info. I'll let you guys know when I'm able.
    What's wrong with the computer you are using now to reply to us ?
      My ComputerSystem Spec
  10.    17 Mar 2016 #10
    Join Date : Oct 2014
    Arnold, MD
    Posts : 29,606
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)

    Quote Originally Posted by davidhk View Post
    What's wrong with the computer you are using now to reply to us ?
    But, may be using a phone.....
      My ComputersSystem Spec

 
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