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Windows 7 and 10

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#1 Dave Clark

Dave Clark

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Posted 25 November 2015 - 01:09 PM


I think I've cocked up. I'm running windows 7 but then decided to try windows 10 as well. I installed windows 10 on a separate HDD and was able to switch between  windows 7 or 10 by using the bios booting option

However because somehow or other the HDD's and CD roms were assigned drive letters out of sequence, (CD roms were D & E, my 2TB Hdd was mixture of F to K). I decided to change the drive letters while I was in windows 7.but didn't keep a record of  what the original Drive letters were.

Now I cannot get my Windows 10 to boot. I've tried with only the Windows 10 hdd connected, also tried with a Macrium repair disc in the CD Rom but no way will the windows 10 boot.

I cannot really understand why this should happen as the windows 10 is obviously on C drive on the other HDD. All I keep getting are messages via the Bios.


Is this change of drive letters possibly the reason for the problem as I've been using both systems for a couple of months and was just starting the migration from 7 to 10


Any help would be appreciated



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#2 dudeage


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Posted 25 November 2015 - 04:26 PM

I would get to the F8 Advanced Options menu and run Last Known Good Configuration.  


If that doesn't work, try running this command from a command prompt window:  http://www.dummies.com/how-to/content/how-to-fix-the-master-boot-record-in-windows.html


If all else fails, you may have to reformat the hard drive, but try these things first.  

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