Upgrading to Windows 10 on dual boot system is problematic

posted Dec 14, 2015, 10:00 AM by Niels Jensen   [ updated Dec 14, 2015, 10:17 AM ]
Since a new version of openSUSE was released last month we decided it was time to upgrade the Windows 7 Home Premium on our Desktop system to Windows 10. That is not without its challenges! First we had to reserve our upgrade, which according to Microsoft would be ready with some days or weeks. However, just before this upgrade, we had upgraded an HP Pavillion laptop running Windows 7 Professional to Windows 10. On the Windows 7 Professional the upgrade was available as soon as we installed and run the Windows 10 upgrade app, and when we started the upgrade it completed without any problems. And all our files where, at Microsoft claimed, where we left them. The upgrade was completed relatively quickly.

Based previously having problems with our openSUSE installation after installation of an upgrade from Microsoft we decided to see what people on the internet said. We did find one blogger, who claimed Windows 10 behaved well with Grub2. So we started the upgrade. Some hours later it failed with error 8007001F. We found many discussion of this error on Microsoft sites, and not a hint of a solution. After experiencing the error on two dual boot systems and not getting anywhere with the advice from the official Microsoft sites, we googled "Windows Update 8007001F", and found discussion (scroll down to Stepan's reply on August 8, 2015) with an approach to a solution on a Microsoft forum site. The problem turned out to be Grub2 and the MBR. So we created a Windows 7 Home Premium Recovery Disk (64-bit), and executed "bootrec /FixMbr" and "bootrec /Fixboot" to remove Grub2 from the path to Windows.We the performed the upgrade to Windows 10. However, we still have not had enough patience to let Microsoft install all the updates created since the release of the upgrade software this summer (This means, that so far we have had to power off the system to stop Windows).

The illustration next to this announcement is curtesy of Microsoft.