Switch from Grub2 to Windows Bootloader

Jsn

New Member
#1
I have a 64-bit machine that came with Windows 7 pre-installed which I then immediately converted to a Grub2-based openSuSE 13.2 x64 Linux system with dual boot into Windows -- both work fine.

I'd now like to upgrade Windows 7 to Windows 10 but, sadly, the upgrade fails due to Grub2 (according to MS). So, I'd like to switch to the Windows bootloader (temporarily).

Here's my configuration:

C:\Program Files (x86)\NeoSmart Technologies\EasyBCD\bin>BootGrabber.exe /tlist

BootGrabber utility.
Copyright NeoSmart Technologies 2009-2011 <http://neosmart.net/>

WARN: Unable to get volume information for \\?\Volume{26cbfa9d-0b62-11e4-82dc-806e6f6e6963}\
D0,6,4,3,2000398934016,0
P1,V:\,6,41094144,25806848,Yes,multi(0)disk(0)rdisk(0)partition(1),No,FAT
P2,,7,786432000,546238464,Yes,multi(0)disk(0)rdisk(0)partition(2),No,
P3,C:\,7,718363054080,584210694144,Yes,multi(0)disk(0)rdisk(0)partition(3),No,NTFS
P0,,15,1281206779904,0,Yes,,No,
P4,,130,2147483648,2147483648,No,multi(0)disk(0)rdisk(0)partition(4),No,
P0,,5,21475875840,0,No,,No,
P5,,131,21474836480,21474836480,No,multi(0)disk(0)rdisk(0)partition(5),No,
P0,,5,1257571546624,0,No,,No,
P6,,131,1257570828288,1257570828288,No,multi(0)disk(0)rdisk(0)partition(6),No,


I've tried executing Install BCD and Write MBR from BCD Deployment in EasyBCD (2.2.0.182) on partition 1 ("V:\") as well as on partition 3 ("C:\") but in both cases Grub2 remains. The BIOS boot is set to "Legacy", not UEFI.

Any ideas on how to proceed?

--Jan